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Type.IsInterface Property

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)

public bool IsInterface { get; }

Property Value

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

Implements

_Type.IsInterface

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.

The following example creates an interface, checks for the interface type, and indicates whether a class has the IsInterface property set.

using System;
// Declare an interface. 
interface myIFace
{
}
class MyIsInterface 
{
    public static void Main(string []args)
    {
        try
        {
            // Get the IsInterface attribute for myIFace. 
            bool myBool1 = typeof(myIFace).IsInterface;    
            //Display the IsInterface attribute for myIFace.
            Console.WriteLine("Is the specified type an interface? {0}.", myBool1);
            // Get the attribute IsInterface for MyIsInterface. 
            bool myBool2 = typeof(MyIsInterface).IsInterface;    
            //Display the IsInterface attribute for MyIsInterface.
            Console.WriteLine("Is the specified type an interface? {0}.", myBool2);         
        }
        catch(Exception e)
        {
            Console.WriteLine("\nAn exception occurred: {0}.", e.Message);
        }
    }
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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