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GuidAttribute Class

Supplies an explicit System.Guid when an automatic GUID is undesirable.

Namespace: System.Runtime.InteropServices
Assembly: mscorlib (in mscorlib.dll)

[ComVisibleAttribute(true)] 
[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Enum|AttributeTargets.Interface|AttributeTargets.Delegate, Inherited=false)] 
public sealed class GuidAttribute : Attribute
/** @attribute ComVisibleAttribute(true) */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Enum|AttributeTargets.Interface|AttributeTargets.Delegate, Inherited=false) */ 
public final class GuidAttribute extends Attribute
ComVisibleAttribute(true) 
AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Enum|AttributeTargets.Interface|AttributeTargets.Delegate, Inherited=false) 
public final class GuidAttribute extends Attribute

You can apply this attribute to assemblies, interfaces, classes, enumerations, structures, or delegates, although the Type Library Importer (Tlbimp.exe) can apply it for you when it imports a type library.

The string passed to the attribute must be in a format that is an acceptable constructor argument for the type Guid. To avoid conflicts with the type Guid, use the long name GuidAttribute explicitly. Only use an explicit GUID when a type must have a specific GUID. If the attribute is omitted, a GUID is assigned automatically.

The following example demonstrates how to apply the GuidAttribute to a class that is exported to COM with a fixed GUID.

using System;
using System.Runtime.InteropServices;


[GuidAttribute("9ED54F84-A89D-4fcd-A854-44251E925F09")]
public class SampleClass 
{
    // Insert class members here.
}

import System.*;
import System.Runtime.InteropServices.*;


/** @attribute GuidAttribute("9ED54F84-A89D-4fcd-A854-44251E925F09")
 */

public class SampleClass
{
  // Insert class members here.  
} 

import System
import System.Runtime.InteropServices


 public GuidAttribute("9ED54F84-A89D-4fcd-A854-44251E925F09")
 class SampleClass{
     // Insert class members here
 }

System.Object
   System.Attribute
    System.Runtime.InteropServices.GuidAttribute
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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