Windows apps
Collapse the table of content
Expand the table of content
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Type.GUID Property

Gets the GUID associated with the Type.

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

public abstract Guid GUID { get; }

Property Value

Type: System.Guid
The GUID associated with the Type.

A GUID is associated with a type using the GuidAttribute attribute.

The following example creates the class MyClass1 with a public method, creates a Type object corresponding to MyClass1, and gets the Guid structure using the GUID property of the Type class.

using System;

class Example
   public class MyClass1
      public void MyMethod1()
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
      // Get the type corresponding to the class MyClass.
      Type myType = typeof(MyClass1);
      // Get the object of the Guid.
      Guid myGuid = (Guid)myType.GUID;
      outputBlock.Text += "The name of the class is " + myType.ToString() + "\n";
      outputBlock.Text += "The ClassId of MyClass is " + myType.GUID + "\n";


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Community Additions

© 2017 Microsoft