GuidAttribute Class

Definition

Namespace:

System.Runtime.InteropServices

Assembly:

System.Runtime.InteropServices.dll

Source:

GuidAttribute.cs

Supplies an explicit Guid when an automatic GUID is undesirable.

public ref class GuidAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Interface | System.AttributeTargets.Struct, Inherited=false)]
public sealed class GuidAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Delegate | System.AttributeTargets.Enum | System.AttributeTargets.Interface | System.AttributeTargets.Struct, Inherited=false)>]
type GuidAttribute = class
    inherit Attribute

Public NotInheritable Class GuidAttribute
Inherits Attribute

Inheritance

Object

Attribute

GuidAttribute

Attributes

AttributeUsageAttribute

Examples

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

using namespace System;
using namespace System::Runtime::InteropServices;


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

using System;
using System.Runtime.InteropServices;

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

Imports System.Runtime.InteropServices


 <GuidAttribute("9ED54F84-A89D-4fcd-A854-44251E925F09")> _
 Public Class SampleClass
     ' Insert class members here.
 End Class

Remarks

You can apply this attribute to assemblies, interfaces, classes, enumerations, structures, or delegates, although the Tlbimp.exe (Type Library Importer) 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.

Constructors

GuidAttribute(String)

Initializes a new instance of the GuidAttribute class with the specified GUID.

Properties

TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)
Value	Gets the Guid of the class.

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsDefaultAttribute()	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• Guid
• Tlbimp.exe (Type Library Importer)