Type.GetTypeFromCLSID Método

Definição

Namespace:: System

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Importante

Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.

Obtém o tipo associado ao CLSID (identificador de classe) especificado.

Sobrecargas

Nome	Description
GetTypeFromCLSID(Guid)	Obtém o tipo associado ao CLSID (identificador de classe) especificado.
GetTypeFromCLSID(Guid, Boolean)	Obtém o tipo associado ao CLSID (identificador de classe) especificado, especificando se uma exceção será gerada se ocorrer um erro ao carregar o tipo.
GetTypeFromCLSID(Guid, String)	Obtém o tipo associado ao CLSID (identificador de classe) especificado do servidor especificado.
GetTypeFromCLSID(Guid, String, Boolean)	Obtém o tipo associado ao CLSID (identificador de classe) especificado do servidor especificado, especificando se uma exceção será gerada se ocorrer um erro ao carregar o tipo.

GetTypeFromCLSID(Guid)

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Obtém o tipo associado ao CLSID (identificador de classe) especificado.

public:
 static Type ^ GetTypeFromCLSID(Guid clsid);

[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static Type? GetTypeFromCLSID(Guid clsid);

public static Type? GetTypeFromCLSID(Guid clsid);

public static Type GetTypeFromCLSID(Guid clsid);

[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member GetTypeFromCLSID : Guid -> Type

static member GetTypeFromCLSID : Guid -> Type

Public Shared Function GetTypeFromCLSID (clsid As Guid) As Type

Parâmetros

clsid: Guid

O CLSID do tipo a ser obtido.

Retornos

Type

System.__ComObject independentemente de o CLSID ser válido.

Atributos: SupportedOSPlatformAttribute

Exemplos

O exemplo a seguir usa o CLSID do objeto aplicativo Microsoft Word para recuperar um tipo COM que representa o aplicativo Microsoft Word. Em seguida, ele cria uma instância do tipo chamando o Activator.CreateInstance método e o fecha chamando o método Application.Quit .

using System;
using System.Reflection;
using System.Runtime.InteropServices;

public class Example
{
   private const string WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}";
   
   public static void Main()
   {
      // Start an instance of the Word application.
      var word = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID));
      Console.WriteLine("Instantiated Type object from CLSID {0}",
                        WORD_CLSID);
      Object wordObj = Activator.CreateInstance(word);
      Console.WriteLine("Instantiated {0}", 
                        wordObj.GetType().FullName);
      
      // Close Word.
      word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, 
                        wordObj, new object[] { 0, 0, false } );
   }
}
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

open System
open System.Reflection

let [<Literal>] WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}"
   
// Start an instance of the Word application.
let word = Type.GetTypeFromCLSID(Guid.Parse WORD_CLSID)
printfn $"Instantiated Type object from CLSID {WORD_CLSID}"
let wordObj = Activator.CreateInstance word
printfn $"Instantiated {wordObj.GetType().FullName}"

// Close Word.
word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, wordObj, [| box 0; 0; false |]) |> ignore
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Imports System.Reflection
Imports System.Runtime.InteropServices

Module Example
   Private Const WORD_CLSID As String = "{000209FF-0000-0000-C000-000000000046}"
   
   Public Sub Main()
      ' Start an instance of the Word application.
      Dim word As Type = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID))
      Console.WriteLine("Instantiated Type object from CLSID {0}",
                        WORD_CLSID)
      Dim wordObj As Object = Activator.CreateInstance(word)
      Console.WriteLine("Instantiated {0}", 
                        wordObj.GetType().FullName)
      
      ' Close Word.
      word.InvokeMember("Quit", BindingFlags.InvokeMethod, Nothing, 
                        wordObj, New Object() { 0, 0, False } )
   End Sub
End Module
' The example displays the following output:
'    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
'    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Comentários

O GetTypeFromCLSID método dá suporte ao acesso de associação tardia a objetos COM não gerenciados de aplicativos do .NET Framework quando você conhece o CLSID (identificador de classe) do objeto COM. O identificador de classe para classes COM é definido na chave HKEY_CLASSES_ROOT\CLSID do registro. Você pode recuperar o valor da IsCOMObject propriedade para determinar se o tipo retornado por esse método é um objeto COM.

Dica

Você pode chamar o GetTypeFromProgID método para acesso atrasado a objetos COM cujo identificador programático (ProgID) você conhece.

Criar uma instância de um objeto COM não gerenciado de seu CLSID é um processo de duas etapas:

Obtenha um Type objeto que represente o__ComObject que corresponde ao CLSID chamando o GetTypeFromCLSID método.
Chame o Activator.CreateInstance(Type) método para instanciar o objeto COM.

Consulte o exemplo para obter uma ilustração.

A GetTypeFromCLSID(Guid) sobrecarga ignora qualquer exceção que possa ocorrer ao instanciar um Type objeto com base no clsid argumento. Observe que nenhuma exceção será gerada se clsid não for encontrada no registro.

Notas aos Chamadores

Esse método destina-se a ser usado ao trabalhar com objetos COM, não com objetos do .NET Framework. Todos os objetos gerenciados, incluindo aqueles que são visíveis para COM (ou seja, seu ComVisibleAttribute atributo é true) têm um GUID que é retornado pela GUID propriedade. Embora o método retorne um Type objeto que corresponda ao GUID para objetos do .NET Framework, você não pode usar esse Type objeto para criar uma instância de tipo chamando o CreateInstance(Type) método, como mostra o exemplo a seguir.

using System;
using System.Runtime.InteropServices;

[assembly:ComVisible(true)]

// Define two classes, and assign one an explicit GUID.
[GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")]
public class ExplicitGuid
{ }

public class NoExplicitGuid
{ }

public class Example
{
   public static void Main()
   {
      Type explicitType = typeof(ExplicitGuid);
      Guid explicitGuid = explicitType.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type explicitCOM = Type.GetTypeFromCLSID(explicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(explicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      } 
        
      Type notExplicit = typeof(NoExplicitGuid);
      Guid notExplicitGuid = notExplicit.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(notExplicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      }   
   }
}
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

open System
open System.Runtime.InteropServices

[<assembly: ComVisible true>]
do ()

// Define two classes, and assign one an explicit GUID.
[<Guid "d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4">]
type ExplicitGuid() = class end

type NoExplicitGuid() = class end

let explicitType = typeof<ExplicitGuid>
let explicitGuid = explicitType.GUID

// Get type of ExplicitGuid from its GUID.
let explicitCOM = Type.GetTypeFromCLSID explicitGuid
printfn $"Created {explicitCOM.Name} type from CLSID {explicitGuid}"
                
// Compare the two type objects.
printfn $"{explicitType.Name} and {explicitCOM.Name} equal: {explicitType.Equals explicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance explicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"

let notExplicit = typeof<NoExplicitGuid>
let notExplicitGuid = notExplicit.GUID

// Get type of ExplicitGuid from its GUID.
let notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid)
printfn $"Created {notExplicitCOM.Name} type from CLSID {notExplicitGuid}"
                
// Compare the two type objects.
printfn $"{notExplicit.Name} and {notExplicitCOM.Name} equal: {notExplicit.Equals notExplicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance notExplicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"   
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Imports System.Runtime.InteropServices

<Assembly:ComVisible(True)>

' Define two classes, and assign one an explicit GUID.
<GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")>
Public Class ExplicitGuid
End Class

Public Class NoExplicitGuid
End Class

Module Example
   Public Sub Main()
      Dim explicitType As Type = GetType(ExplicitGuid)
      Dim explicitGuid As Guid = explicitType.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim explicitCOM As Type = Type.GetTypeFromCLSID(explicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(explicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
        
      Dim notExplicit As Type = GetType(NoExplicitGuid)
      Dim notExplicitGuid As Guid = notExplicit.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim notExplicitCOM As Type = Type.GetTypeFromCLSID(notExplicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(notExplicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
   End Sub
End Module
' The example displays the following output:
'       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
'       ExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
'       
'       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
'       NoExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Em vez disso, o GetTypeFromCLSID(Guid, String, Boolean) único deve ser usado para recuperar o GUID de um objeto COM não gerenciado e o objeto resultante Type que é passado para o CreateInstance(Type) método deve representar um objeto COM não gerenciado.

Aplica-se a

GetTypeFromCLSID(Guid, Boolean)

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Obtém o tipo associado ao CLSID (identificador de classe) especificado, especificando se uma exceção será gerada se ocorrer um erro ao carregar o tipo.

public:
 static Type ^ GetTypeFromCLSID(Guid clsid, bool throwOnError);

[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static Type? GetTypeFromCLSID(Guid clsid, bool throwOnError);

public static Type? GetTypeFromCLSID(Guid clsid, bool throwOnError);

public static Type GetTypeFromCLSID(Guid clsid, bool throwOnError);

[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member GetTypeFromCLSID : Guid * bool -> Type

static member GetTypeFromCLSID : Guid * bool -> Type

Public Shared Function GetTypeFromCLSID (clsid As Guid, throwOnError As Boolean) As Type

Parâmetros

clsid: Guid

O CLSID do tipo a ser obtido.

throwOnError: Boolean

true para lançar qualquer exceção que ocorra.

- ou -

false para ignorar qualquer exceção que ocorra.

Retornos

Type

System.__ComObject independentemente de o CLSID ser válido.

Atributos: SupportedOSPlatformAttribute

Exemplos

using System;
using System.Reflection;
using System.Runtime.InteropServices;

public class Example
{
   private const string WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}";
   
   public static void Main()
   {
      try {
         // Start an instance of the Word application.
         var word = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), true);
         Console.WriteLine("Instantiated Type object from CLSID {0}",
                           WORD_CLSID);
         Object wordObj = Activator.CreateInstance(word);
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName, WORD_CLSID);
         
         // Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, 
                           wordObj, new object[] { 0, 0, false } );
      }
      catch (Exception) {
         Console.WriteLine("Unable to instantiate an object for {0}", WORD_CLSID);
      }
   }
}
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

open System
open System.Reflection

let [<Literal>] WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}"

try
    // Start an instance of the Word application.
    let word = Type.GetTypeFromCLSID(Guid.Parse WORD_CLSID, true)
    printfn $"Instantiated Type object from CLSID {WORD_CLSID}"
    let wordObj = Activator.CreateInstance word
    printfn $"Instantiated {wordObj.GetType().FullName} from CLSID {WORD_CLSID}" 
    
    // Close Word.
    word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, wordObj, [| box 0; 0; false |] ) |> ignore
with _ ->
    printfn $"Unable to instantiate an object for {WORD_CLSID}"
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Imports System.Reflection
Imports System.Runtime.InteropServices

Module Example
   Private Const WORD_CLSID As String = "{000209FF-0000-0000-C000-000000000046}"
   
   Public Sub Main()
      ' Start an instance of the Word application.
      Try
         Dim word As Type = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), True)
         Console.WriteLine("Instantiated Type object from CLSID {0}",
                           WORD_CLSID)
         Dim wordObj As Object = Activator.CreateInstance(word)
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName)
         
         ' Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, Nothing, 
                           wordObj, New Object() { 0, 0, False } )
      ' The method can throw any of a number of unexpected exceptions.
      Catch e As Exception
         Console.WriteLine("Unable to instantiate an object for {0}", WORD_CLSID)
      End Try
   End Sub
End Module
' The example displays the following output:
'    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
'    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Comentários

Dica

Você pode chamar o GetTypeFromProgID método para acesso atrasado a objetos COM cujo identificador programático (ProgID) você conhece.

Criar uma instância de um objeto COM não gerenciado de seu CLSID é um processo de duas etapas:

Obtenha um Type objeto que represente o __ComObject que corresponde ao CLSID chamando o GetTypeFromCLSID método.
Chame o Activator.CreateInstance(Type) método para instanciar o objeto COM.

Consulte o exemplo para obter uma ilustração.

Exceções como OutOfMemoryException serão geradas ao especificar truethrowOnError, mas não falharão para CLSIDs não registrados.

Notas aos Chamadores

using System;
using System.Runtime.InteropServices;

[assembly:ComVisible(true)]

// Define two classes, and assign one an explicit GUID.
[GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")]
public class ExplicitGuid
{ }

public class NoExplicitGuid
{ }

public class Example
{
   public static void Main()
   {
      Type explicitType = typeof(ExplicitGuid);
      Guid explicitGuid = explicitType.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type explicitCOM = Type.GetTypeFromCLSID(explicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(explicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      } 
        
      Type notExplicit = typeof(NoExplicitGuid);
      Guid notExplicitGuid = notExplicit.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(notExplicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      }   
   }
}
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

open System
open System.Runtime.InteropServices

[<assembly: ComVisible true>]
do ()

// Define two classes, and assign one an explicit GUID.
[<Guid "d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4">]
type ExplicitGuid() = class end

type NoExplicitGuid() = class end

let explicitType = typeof<ExplicitGuid>
let explicitGuid = explicitType.GUID

// Get type of ExplicitGuid from its GUID.
let explicitCOM = Type.GetTypeFromCLSID explicitGuid
printfn $"Created {explicitCOM.Name} type from CLSID {explicitGuid}"
                
// Compare the two type objects.
printfn $"{explicitType.Name} and {explicitCOM.Name} equal: {explicitType.Equals explicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance explicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"

let notExplicit = typeof<NoExplicitGuid>
let notExplicitGuid = notExplicit.GUID

// Get type of ExplicitGuid from its GUID.
let notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid)
printfn $"Created {notExplicitCOM.Name} type from CLSID {notExplicitGuid}"
                
// Compare the two type objects.
printfn $"{notExplicit.Name} and {notExplicitCOM.Name} equal: {notExplicit.Equals notExplicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance notExplicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"   
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Imports System.Runtime.InteropServices

<Assembly:ComVisible(True)>

' Define two classes, and assign one an explicit GUID.
<GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")>
Public Class ExplicitGuid
End Class

Public Class NoExplicitGuid
End Class

Module Example
   Public Sub Main()
      Dim explicitType As Type = GetType(ExplicitGuid)
      Dim explicitGuid As Guid = explicitType.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim explicitCOM As Type = Type.GetTypeFromCLSID(explicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(explicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
        
      Dim notExplicit As Type = GetType(NoExplicitGuid)
      Dim notExplicitGuid As Guid = notExplicit.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim notExplicitCOM As Type = Type.GetTypeFromCLSID(notExplicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(notExplicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
   End Sub
End Module
' The example displays the following output:
'       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
'       ExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
'       
'       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
'       NoExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Aplica-se a

GetTypeFromCLSID(Guid, String)

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Obtém o tipo associado ao CLSID (identificador de classe) especificado do servidor especificado.

public:
 static Type ^ GetTypeFromCLSID(Guid clsid, System::String ^ server);

[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static Type? GetTypeFromCLSID(Guid clsid, string? server);

public static Type? GetTypeFromCLSID(Guid clsid, string? server);

public static Type GetTypeFromCLSID(Guid clsid, string server);

[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member GetTypeFromCLSID : Guid * string -> Type

static member GetTypeFromCLSID : Guid * string -> Type

Public Shared Function GetTypeFromCLSID (clsid As Guid, server As String) As Type

Parâmetros

clsid: Guid

O CLSID do tipo a ser obtido.

server: String

O servidor do qual carregar o tipo. Se o nome do servidor for null, esse método será revertido automaticamente para o computador local.

Retornos

Type

System.__ComObject independentemente de o CLSID ser válido.

Atributos: SupportedOSPlatformAttribute

Exemplos

O exemplo a seguir usa o CLSID do objeto aplicativo Microsoft Word para recuperar um tipo COM que representa o aplicativo Microsoft Word de um servidor chamado computer17.central.contoso.com. Em seguida, ele cria uma instância do tipo chamando o Activator.CreateInstance método e o fecha chamando o método Application.Quit .

using System;
using System.Reflection;
using System.Runtime.InteropServices;

public class Example
{
   private const string WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}";
   
   public static void Main()
   {
      // Start an instance of the Word application.
      var word = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), "computer17.central.contoso.com");
      Console.WriteLine("Instantiated Type object from CLSID {0}",
                        WORD_CLSID);
      try {
         Object wordObj = Activator.CreateInstance(word);
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName, WORD_CLSID);
            
         // Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, 
                           wordObj, new object[] { 0, 0, false } );
      }
      catch (COMException) {
         Console.WriteLine("Unable to instantiate object.");   
      }
   }
}
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

open System
open System.Reflection
open System.Runtime.InteropServices

let [<Literal>] WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}"

// Start an instance of the Word application.
let word = Type.GetTypeFromCLSID(Guid.Parse WORD_CLSID, "computer17.central.contoso.com")
printfn $"Instantiated Type object from CLSID {WORD_CLSID}"
try
    let wordObj = Activator.CreateInstance word
    printfn $"Instantiated {wordObj.GetType().FullName} from CLSID {WORD_CLSID}" 
    
    // Close Word.
    word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, wordObj, [| box 0; 0; false |] ) |> ignore
with :? COMException ->
    printfn "Unable to instantiate object."   
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Imports System.Reflection
Imports System.Runtime.InteropServices

Module Example
   Private Const WORD_CLSID As String = "{000209FF-0000-0000-C000-000000000046}"
   
   Public Sub Main()
      ' Start an instance of the Word application.
      Dim word As Type = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), "computer17.central.contoso.com")
      Console.WriteLine("Instantiated Type object from CLSID {0}",
                        WORD_CLSID)
      Try
         Dim wordObj As Object = Activator.CreateInstance(word)
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName)
         
         ' Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, Nothing, 
                           wordObj, New Object() { 0, 0, False } )
      Catch e As COMException
         Console.WriteLine("Unable to instantiate object.")
      End Try
   End Sub
End Module
' The example displays the following output:
'    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
'    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Comentários

Dica

Você pode chamar o GetTypeFromProgID método para acesso atrasado a objetos COM cujo identificador programático (ProgID) você conhece.

Criar uma instância de um objeto COM não gerenciado de seu CLSID é um processo de duas etapas:

Obtenha um Type objeto que represente o __ComObject que corresponde ao CLSID chamando o GetTypeFromCLSID método.
Chame o Activator.CreateInstance(Type) método para instanciar o objeto COM.

Notas aos Chamadores

using System;
using System.Runtime.InteropServices;

[assembly:ComVisible(true)]

// Define two classes, and assign one an explicit GUID.
[GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")]
public class ExplicitGuid
{ }

public class NoExplicitGuid
{ }

public class Example
{
   public static void Main()
   {
      Type explicitType = typeof(ExplicitGuid);
      Guid explicitGuid = explicitType.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type explicitCOM = Type.GetTypeFromCLSID(explicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(explicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      } 
        
      Type notExplicit = typeof(NoExplicitGuid);
      Guid notExplicitGuid = notExplicit.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(notExplicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      }   
   }
}
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

open System
open System.Runtime.InteropServices

[<assembly: ComVisible true>]
do ()

// Define two classes, and assign one an explicit GUID.
[<Guid "d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4">]
type ExplicitGuid() = class end

type NoExplicitGuid() = class end

let explicitType = typeof<ExplicitGuid>
let explicitGuid = explicitType.GUID

// Get type of ExplicitGuid from its GUID.
let explicitCOM = Type.GetTypeFromCLSID explicitGuid
printfn $"Created {explicitCOM.Name} type from CLSID {explicitGuid}"
                
// Compare the two type objects.
printfn $"{explicitType.Name} and {explicitCOM.Name} equal: {explicitType.Equals explicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance explicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"

let notExplicit = typeof<NoExplicitGuid>
let notExplicitGuid = notExplicit.GUID

// Get type of ExplicitGuid from its GUID.
let notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid)
printfn $"Created {notExplicitCOM.Name} type from CLSID {notExplicitGuid}"
                
// Compare the two type objects.
printfn $"{notExplicit.Name} and {notExplicitCOM.Name} equal: {notExplicit.Equals notExplicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance notExplicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"   
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Imports System.Runtime.InteropServices

<Assembly:ComVisible(True)>

' Define two classes, and assign one an explicit GUID.
<GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")>
Public Class ExplicitGuid
End Class

Public Class NoExplicitGuid
End Class

Module Example
   Public Sub Main()
      Dim explicitType As Type = GetType(ExplicitGuid)
      Dim explicitGuid As Guid = explicitType.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim explicitCOM As Type = Type.GetTypeFromCLSID(explicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(explicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
        
      Dim notExplicit As Type = GetType(NoExplicitGuid)
      Dim notExplicitGuid As Guid = notExplicit.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim notExplicitCOM As Type = Type.GetTypeFromCLSID(notExplicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(notExplicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
   End Sub
End Module
' The example displays the following output:
'       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
'       ExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
'       
'       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
'       NoExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Aplica-se a

GetTypeFromCLSID(Guid, String, Boolean)

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Origem:: Type.cs

Obtém o tipo associado ao CLSID (identificador de classe) especificado do servidor especificado, especificando se uma exceção será gerada se ocorrer um erro ao carregar o tipo.

public:
 static Type ^ GetTypeFromCLSID(Guid clsid, System::String ^ server, bool throwOnError);

[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static Type? GetTypeFromCLSID(Guid clsid, string? server, bool throwOnError);

public static Type? GetTypeFromCLSID(Guid clsid, string? server, bool throwOnError);

public static Type GetTypeFromCLSID(Guid clsid, string server, bool throwOnError);

[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member GetTypeFromCLSID : Guid * string * bool -> Type

static member GetTypeFromCLSID : Guid * string * bool -> Type

Public Shared Function GetTypeFromCLSID (clsid As Guid, server As String, throwOnError As Boolean) As Type

Parâmetros

clsid: Guid

O CLSID do tipo a ser obtido.

server: String

O servidor do qual carregar o tipo. Se o nome do servidor for null, esse método será revertido automaticamente para o computador local.

throwOnError: Boolean

true para lançar qualquer exceção que ocorra.

- ou -

false para ignorar qualquer exceção que ocorra.

Retornos

Type

System.__ComObject independentemente de o CLSID ser válido.

Atributos: SupportedOSPlatformAttribute

Exemplos

using System;
using System.Reflection;
using System.Runtime.InteropServices;

public class Example
{
   private const string WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}";
   
   public static void Main()
   {
      try {
         // Start an instance of the Word application.
         var word = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), 
                                          "computer17.central.contoso.com",
                                          true);
         Console.WriteLine("Instantiated Type object from CLSID {0}",
                           WORD_CLSID);
         Object wordObj = Activator.CreateInstance(word);
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName, WORD_CLSID);
            
         // Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, 
                           wordObj, new object[] { 0, 0, false } );
      }
      // The method can throw any of a variety of exceptions.
      catch (Exception e) {
         Console.WriteLine("{0}: Unable to instantiate an object for {1}", 
                           e.GetType().Name, WORD_CLSID);
      }      
   }
}
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

open System
open System.Reflection

let [<Literal>] WORD_CLSID = "{000209FF-0000-0000-C000-000000000046}"

try
    // Start an instance of the Word application.
    let word = Type.GetTypeFromCLSID(Guid.Parse WORD_CLSID, "computer17.central.contoso.com", true)
    printfn $"Instantiated Type object from CLSID {WORD_CLSID}"
    let wordObj = Activator.CreateInstance word
    printfn $"Instantiated {wordObj.GetType().FullName} from CLSID {WORD_CLSID}" 
    
    // Close Word.
    word.InvokeMember("Quit", BindingFlags.InvokeMethod, null, wordObj, [| box 0; 0; false |] ) |> ignore
// The method can throw any of a variety of exceptions.
with e ->
    printfn $"{e.GetType().Name}: Unable to instantiate an object for {WORD_CLSID}" 
// The example displays the following output:
//    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
//    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Imports System.Reflection
Imports System.Runtime.InteropServices

Module Example
   Private Const WORD_CLSID As String = "{000209FF-0000-0000-C000-000000000046}"
   
   Public Sub Main()
      Try
         ' Start an instance of the Word application.
         Dim word As Type = Type.GetTypeFromCLSID(Guid.Parse(WORD_CLSID), 
                                                  "computer17.central.contoso.com",
                                                  True)
         Console.WriteLine("Instantiated Type object from CLSID {0}",
                           WORD_CLSID)

         Dim wordObj As Object = Activator.CreateInstance(word)
         Console.WriteLine("Instantiated {0}", 
                           wordObj.GetType().FullName)
         
         ' Close Word.
         word.InvokeMember("Quit", BindingFlags.InvokeMethod, Nothing, 
                           wordObj, New Object() { 0, 0, False } )
      ' The method can throw any of a variety of exceptions.
      Catch e As Exception
         Console.WriteLine("{0}: Unable to instantiate an object for {1}", 
                           e.GetType().Name, WORD_CLSID)
      End Try
   End Sub
End Module
' The example displays the following output:
'    Instantiated Type object from CLSID {000209FF-0000-0000-C000-000000000046}
'    Instantiated Microsoft.Office.Interop.Word.ApplicationClass

Comentários

Dica

Você pode chamar o GetTypeFromProgID método para acesso atrasado a objetos COM cujo identificador programático (ProgID) você conhece.

Criar uma instância de um objeto COM não gerenciado de seu CLSID é um processo de duas etapas:

Obtenha um Type objeto que represente o __ComObject que corresponde ao CLSID chamando o GetTypeFromCLSID método.
Chame o Activator.CreateInstance(Type) método para instanciar o objeto COM.

Exceções como OutOfMemoryException serão geradas ao especificar truethrowOnError, mas não falharão para CLSIDs não registrados.

Notas aos Chamadores

Esse método destina-se a ser usado ao trabalhar com objetos COM, não com objetos do .NET Framework. Todos os objetos gerenciados, incluindo aqueles que são visíveis para COM (ou seja, seu ComVisibleAttribute atributo é true) têm um GUID que é retornado pela GUID propriedade. Embora o GetTypeFromCLSID(Guid, String, Boolean) método retorne um Type objeto que corresponda ao GUID para um objeto gerenciado específico, você não pode usar esse Type objeto para criar uma instância de tipo chamando o CreateInstance(Type) método, como mostra o exemplo a seguir.

using System;
using System.Runtime.InteropServices;

[assembly:ComVisible(true)]

// Define two classes, and assign one an explicit GUID.
[GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")]
public class ExplicitGuid
{ }

public class NoExplicitGuid
{ }

public class Example
{
   public static void Main()
   {
      Type explicitType = typeof(ExplicitGuid);
      Guid explicitGuid = explicitType.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type explicitCOM = Type.GetTypeFromCLSID(explicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(explicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      } 
        
      Type notExplicit = typeof(NoExplicitGuid);
      Guid notExplicitGuid = notExplicit.GUID;
      
      // Get type of ExplicitGuid from its GUID.
      Type notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid);
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid);
                        
      // Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM));                  
      
      // Instantiate an ExplicitGuid object.
      try {
         Object obj = Activator.CreateInstance(notExplicitCOM);
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name);
      } 
      catch (COMException e) {
         Console.WriteLine("COM Exception:\n{0}\n", e.Message);   
      }   
   }
}
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

open System
open System.Runtime.InteropServices

[<assembly: ComVisible true>]
do ()

// Define two classes, and assign one an explicit GUID.
[<Guid "d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4">]
type ExplicitGuid() = class end

type NoExplicitGuid() = class end

let explicitType = typeof<ExplicitGuid>
let explicitGuid = explicitType.GUID

// Get type of ExplicitGuid from its GUID.
let explicitCOM = Type.GetTypeFromCLSID explicitGuid
printfn $"Created {explicitCOM.Name} type from CLSID {explicitGuid}"
                
// Compare the two type objects.
printfn $"{explicitType.Name} and {explicitCOM.Name} equal: {explicitType.Equals explicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance explicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"

let notExplicit = typeof<NoExplicitGuid>
let notExplicitGuid = notExplicit.GUID

// Get type of ExplicitGuid from its GUID.
let notExplicitCOM = Type.GetTypeFromCLSID(notExplicitGuid)
printfn $"Created {notExplicitCOM.Name} type from CLSID {notExplicitGuid}"
                
// Compare the two type objects.
printfn $"{notExplicit.Name} and {notExplicitCOM.Name} equal: {notExplicit.Equals notExplicitCOM}"       

// Instantiate an ExplicitGuid object.
try
    let obj = Activator.CreateInstance notExplicitCOM
    printfn $"Instantiated a {obj.GetType().Name} object"
with :? COMException as e ->
    printfn $"COM Exception:\n{e.Message}\n"   
// The example displays the following output:
//       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
//       ExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
//       
//       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
//       NoExplicitGuid and __ComObject equal: False
//       COM Exception:
//       Retrieving the COM class factory for component with CLSID 
//       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
//       80040154 Class not registered 
//       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Imports System.Runtime.InteropServices

<Assembly:ComVisible(True)>

' Define two classes, and assign one an explicit GUID.
<GuidAttribute("d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4")>
Public Class ExplicitGuid
End Class

Public Class NoExplicitGuid
End Class

Module Example
   Public Sub Main()
      Dim explicitType As Type = GetType(ExplicitGuid)
      Dim explicitGuid As Guid = explicitType.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim explicitCOM As Type = Type.GetTypeFromCLSID(explicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        explicitCOM.Name, explicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        explicitType.Name, explicitCOM.Name,
                        explicitType.Equals(explicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(explicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
        
      Dim notExplicit As Type = GetType(NoExplicitGuid)
      Dim notExplicitGuid As Guid = notExplicit.GUID
      
      ' Get type of ExplicitGuid from its GUID.
      Dim notExplicitCOM As Type = Type.GetTypeFromCLSID(notExplicitGuid)
      Console.WriteLine("Created {0} type from CLSID {1}",
                        notExplicitCOM.Name, notExplicitGuid)
                        
      ' Compare the two type objects.
      Console.WriteLine("{0} and {1} equal: {2}",
                        notExplicit.Name, notExplicitCOM.Name,
                        notExplicit.Equals(notExplicitCOM))                  
      
      ' Instantiate an ExplicitGuid object.
      Try 
         Dim obj As Object = Activator.CreateInstance(notExplicitCOM)
         Console.WriteLine("Instantiated a {0} object", obj.GetType().Name)
      Catch e As COMException
         Console.WriteLine("COM Exception:{1}{0}{1}", e.Message, vbCrLf)   
      End Try 
   End Sub
End Module
' The example displays the following output:
'       Created __ComObject type from CLSID d055cba3-1f83-4bd7-ba19-e22b1b8ec3c4
'       ExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {D055CBA3-1F83-4BD7-BA19-E22B1B8EC3C4} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
'       
'       Created __ComObject type from CLSID 74f03346-a718-3516-ac78-f351c7459ffb
'       NoExplicitGuid and __ComObject equal: False
'       COM Exception:
'       Retrieving the COM class factory for component with CLSID 
'       {74F03346-A718-3516-AC78-F351C7459FFB} failed due to the following error: 
'       80040154 Class not registered 
'       (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

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Type.GetTypeFromCLSID Método

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GetTypeFromCLSID(Guid)

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GetTypeFromCLSID(Guid, Boolean)

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GetTypeFromCLSID(Guid, String)

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GetTypeFromCLSID(Guid, String, Boolean)

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