Article
11/17/2011

Type.IsClass Property

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Gets a value indicating whether the Type is a class; that is, not a value type or interface.

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

Syntax

'Declaration
Public ReadOnly Property IsClass As Boolean

public bool IsClass { get; }

Property Value

Type: System.Boolean
true if the Type is a class; otherwise, false.

Remarks

This property returns true for Type instances representing Enum and ValueType.

The ClassSemanticsMask distinguishes a type declaration as class, interface, or value type.

If the current Type represents a constructed generic type, this property returns true if the generic type definition is a class definition; that is, it does not define an interface or a value type.

If the current Type represents a type parameter in the definition of a generic type or generic method, this property always returns false.

This property is read-only.

Examples

The following example creates an instance of a type and indicates whether the type is a class.

Note:
To run this example, see Building Examples That Use a Demo Method and a TextBlock Control.

Imports System.Reflection

Public Class MyDemoClass
End Class 'MyDemoClass

Public Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Try
         Dim myType As Type = GetType(MyDemoClass)
         ' Get and display the 'IsClass' property of the 'MyDemoClass' instance.
         outputBlock.Text += String.Format(ControlChars.Cr + "Is the specified type a class? {0}.", myType.IsClass.ToString()) & vbCrLf
      Catch e As Exception
         outputBlock.Text += String.Format(ControlChars.Cr + "An exception occurred: {0}.", e.Message.ToString()) & vbCrLf
      End Try
   End Sub 'Main
End Class 'MyTypeClass

using System;
using System.Reflection;

public class MyDemoClass
{
}

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      try
      {
         Type myType = typeof(MyDemoClass);
         // Get and display the 'IsClass' property of the 'MyDemoClass' instance.
         outputBlock.Text += String.Format("\nIs the specified type a class? {0}.", myType.IsClass) + "\n";
      }
      catch (Exception e)
      {
         outputBlock.Text += String.Format("\nAn exception occurred: {0}.", e.Message) + "\n";
      }
   }
}

Version Information

Silverlight

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

Platforms

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

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