.NET Framework Class Library
Type..::.GetInterface Method (String)

Searches for the interface with the specified name.

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

Visual Basic (Declaration)
Public Function GetInterface ( _
    name As String _
) As Type
Visual Basic (Usage)
Dim instance As Type
Dim name As String
Dim returnValue As Type

returnValue = instance.GetInterface(name)
C#
public Type GetInterface(
    string name
)
Visual C++
public:
virtual Type^ GetInterface(
    String^ name
) sealed
JScript
public final function GetInterface(
    name : String
) : Type

Parameters

name
Type: System..::.String
The String containing the name of the interface to get. For generic interfaces, this is the mangled name.

Return Value

Type: System..::.Type
A Type object representing the interface with the specified name, implemented or inherited by the current Type, if found; otherwise, nullNothingnullptra null reference (Nothing in Visual Basic).

Implements

_Type..::.GetInterface(String)
Exceptions

ExceptionCondition
ArgumentNullException

name is nullNothingnullptra null reference (Nothing in Visual Basic).

AmbiguousMatchException

The current Type represents a type that implements the same generic interface with different type arguments.

Remarks

The search for name is case-sensitive.

If the current Type represents a constructed generic type, this method returns the Type with the type parameters replaced by the appropriate type arguments.

If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the interface constraints and any interfaces inherited from class or interface constraints.

NoteNote:

For generic interfaces, the name parameter is the mangled name, ending with a grave accent (`) and the number of type parameters. This is true for both generic interface definitions and constructed generic interfaces. For example, to find IExample<T> (IExample(Of T) in Visual Basic) or IExample<string> (IExample(Of String) in Visual Basic), search for "IExample`1".

Examples

The following code example uses the GetInterface(String) method to search the Hashtable class for the IDeserializationCallback interface, and lists the methods of the interface.

The code example also demonstrates the GetInterface(String, Boolean) method overload and the GetInterfaceMap method.

Visual Basic
   Public Shared Sub Main()
      Dim hashtableObj As New Hashtable()
      Dim objType As Type = hashtableObj.GetType()
      Dim arrayMemberInfo() As MemberInfo
      Dim arrayMethodInfo() As MethodInfo
      Try
         ' Get the methods implemented in 'IDeserializationCallback' interface.
         arrayMethodInfo = objType.GetInterface("IDeserializationCallback").GetMethods()
         Console.WriteLine(ControlChars.Cr + "Methods of 'IDeserializationCallback' Interface :")
         Dim index As Integer
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         ' Get FullName for interface by using Ignore case search.
         Console.WriteLine(ControlChars.Cr + "Methods of 'IEnumerable' Interface")
         arrayMethodInfo = objType.GetInterface("ienumerable", True).GetMethods()
         For index = 0 To arrayMethodInfo.Length - 1
            Console.WriteLine(arrayMethodInfo(index).ToString())
         Next index
         'Get the Interface methods for 'IDictionary' interface
         Dim interfaceMappingObj As InterfaceMapping
         interfaceMappingObj = objType.GetInterfaceMap(GetType(IDictionary))
         arrayMemberInfo = interfaceMappingObj.InterfaceMethods
         Console.WriteLine(ControlChars.Cr + "Hashtable class Implements the following IDictionary Interface methods :")
         For index = 0 To arrayMemberInfo.Length - 1
            Console.WriteLine(arrayMemberInfo(index).ToString())
         Next index
      Catch e As Exception
         Console.WriteLine(("Exception : " + e.ToString()))
      End Try
   End Sub 'Main
End Class 'MyInterfaceClass 
C#
public static void Main()
{
    Hashtable hashtableObj = new Hashtable();
    Type objType = hashtableObj.GetType();
    MemberInfo[] arrayMemberInfo;
    MethodInfo[] arrayMethodInfo;
    try
    {   
        // Get the methods implemented in 'IDeserializationCallback' interface.
        arrayMethodInfo =objType.GetInterface("IDeserializationCallback").GetMethods();
        Console.WriteLine ("\nMethods of 'IDeserializationCallback' Interface :");
        for(int index=0;index < arrayMethodInfo.Length ;index++)
            Console.WriteLine (arrayMethodInfo[index].ToString() ); 

        // Get FullName for interface by using Ignore case search.
        Console.WriteLine ("\nMethods of 'IEnumerable' Interface");
        arrayMethodInfo = objType.GetInterface("ienumerable",true).GetMethods();
        for(int index=0;index < arrayMethodInfo.Length ;index++)
           Console.WriteLine (arrayMethodInfo[index].ToString()); 

        //Get the Interface methods for 'IDictionary' interface
        InterfaceMapping interfaceMappingObj;
        interfaceMappingObj = objType.GetInterfaceMap(typeof(IDictionary));
        arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
        Console.WriteLine ("\nHashtable class Implements the following IDictionary Interface methods :");
        for(int index=0; index < arrayMemberInfo.Length; index++)
            Console.WriteLine (arrayMemberInfo[index].ToString() ); 
    }
    catch (Exception e)
    {
        Console.WriteLine ("Exception : " + e.ToString());            
    }                 
}
Visual C++
int main()
{
   Hashtable^ hashtableObj = gcnew Hashtable;
   Type^ objType = hashtableObj->GetType();
   array<MemberInfo^>^arrayMemberInfo;
   array<MethodInfo^>^arrayMethodInfo;
   try
   {
      // Get the methods implemented in 'IDeserializationCallback' interface.
      arrayMethodInfo = objType->GetInterface( "IDeserializationCallback" )->GetMethods();
      Console::WriteLine( "\nMethods of 'IDeserializationCallback' Interface :" );
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );

      // Get FullName for interface by using Ignore case search.
      Console::WriteLine( "\nMethods of 'IEnumerable' Interface" );
      arrayMethodInfo = objType->GetInterface( "ienumerable", true )->GetMethods();
      for ( int index = 0; index < arrayMethodInfo->Length; index++ )
         Console::WriteLine( arrayMethodInfo[ index ] );

      //Get the Interface methods for 'IDictionary*' interface
      InterfaceMapping interfaceMappingObj;
      interfaceMappingObj = objType->GetInterfaceMap( IDictionary::typeid );
      arrayMemberInfo = interfaceMappingObj.InterfaceMethods;
      Console::WriteLine( "\nHashtable class Implements the following IDictionary Interface methods :" );
      for ( int index = 0; index < arrayMemberInfo->Length; index++ )
         Console::WriteLine( arrayMemberInfo[ index ] );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "Exception : {0}", e );
   }
}
Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
See Also

Reference

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