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Type.IsInterface Property

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

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

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

Syntax

'Declaration
Public ReadOnly Property IsInterface As Boolean

public bool IsInterface { get; }

Property Value

Type: System.Boolean
true if the Type is an interface; otherwise, false.

Remarks

The ClassSemanticsMask distinguishes a type declaration as class, interface or 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 interface, checks for the interface type, and indicates whether a class has the IsInterface property set.

NoteNote:

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

 
' Declare an interface.
Interface myIFace
End Interface 'myIFace
Class Example
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
      Try
         ' Get the IsInterface attribute for myIFace.
         Dim myBool1 As Boolean = GetType(myIFace).IsInterface
         ' Display the IsInterface attribute for myIFace.
         outputBlock.Text += String.Format("Is the specified type an interface? {0}.", myBool1.ToString) & vbCrLf
         ' Get the IsInterface attribute for Example.
         Dim myBool2 As Boolean = GetType(Example).IsInterface
         ' Display the IsInterface attribute for Example.
         outputBlock.Text += String.Format("Is the specified type an interface? {0}.", myBool2.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 'MyIsInterface

using System;
// Declare an interface.
interface myIFace
{
}
class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      try
      {
         // Get the IsInterface attribute for myIFace.
         bool myBool1 = typeof(myIFace).IsInterface;
         //Display the IsInterface attribute for myIFace.
         outputBlock.Text += String.Format("Is the specified type an interface? {0}.", myBool1) + "\n";
         // Get the attribute IsInterface for Example.
         bool myBool2 = typeof(Example).IsInterface;
         //Display the IsInterface attribute for Example.
         outputBlock.Text += String.Format("Is the specified type an interface? {0}.", myBool2) + "\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.