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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.

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.


  • Last updated on 2011年11月17日