GetInterfaceMap Method
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Type.GetInterfaceMap Method (Type)


Returns an interface mapping for the specified interface type.

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

Public Overridable Function GetInterfaceMap (
	interfaceType As Type
) As InterfaceMapping


Type: System.Type

The interface type to retrieve a mapping for.

Return Value

Type: System.Reflection.InterfaceMapping

An object that represents the interface mapping for interfaceType.

Exception Condition

interfaceType is not implemented by the current type.


The interfaceType parameter does not refer to an interface.


interfaceType is a generic interface, and the current type is an array type.


interfaceType is null.


The current Type represents a generic type parameter; that is, IsGenericParameter is true.


The invoked method is not supported in the base class. Derived classes must provide an implementation.

The interface map denotes how an interface is mapped into the actual members on a class that implements that interface.

If the current Type represents a constructed generic type, type parameters are replaced by the appropriate type arguments in the elements of the InterfaceMapping returned by this method.

The following example calls the GetInterfaceMap method to determine how the IFormatProvider interface maps to CultureInfo methods, and how the IAppDomainSetup interface maps to AppDomainSetup properties. Note that, because the IAppDomainSetup interface defines a set of properties, the returned InterfaceMapping object includes separate MethodInfo objects for a property's get and set accessors.

Imports System.Globalization
Imports System.Reflection

Module Example
   Public Sub Main()
      Dim int() As Type = { GetType(IFormatProvider), GetType(IAppDomainSetup) }
      Dim impl() As Type = { GetType(CultureInfo), GetType(AppDomainSetup) }

      For ctr As Integer = 0 To int.Length - 1
         ShowInterfaceMapping(int(ctr), impl(ctr))
   End Sub

   Private Sub ShowInterfaceMapping(intType As Type, implType As Type)
      Dim map As InterfaceMapping = implType.GetInterfaceMap(intType)
      Console.WriteLine("Mapping of {0} to {1}: ", map.InterfaceType, map.TargetType)
      For ctr As Integer = 0 To map.InterfaceMethods.Length - 1
         Dim im As MethodInfo = map.InterfaceMethods(ctr)
         Dim tm As MethodInfo = map.TargetMethods(ctr)
         Console.WriteLine("   {0} --> {1}", im.Name,tm.Name)
   End Sub
End Module
' The example displays the following output:
'    Mapping of System.IFormatProvider to System.Globalization.CultureInfo:
'       GetFormat --> GetFormat
'    Mapping of System.IAppDomainSetup to System.AppDomainSetup:
'       get_ApplicationBase --> get_ApplicationBase
'       set_ApplicationBase --> set_ApplicationBase
'       get_ApplicationName --> get_ApplicationName
'       set_ApplicationName --> set_ApplicationName
'       get_CachePath --> get_CachePath
'       set_CachePath --> set_CachePath
'       get_ConfigurationFile --> get_ConfigurationFile
'       set_ConfigurationFile --> set_ConfigurationFile
'       get_DynamicBase --> get_DynamicBase
'       set_DynamicBase --> set_DynamicBase
'       get_LicenseFile --> get_LicenseFile
'       set_LicenseFile --> set_LicenseFile
'       get_PrivateBinPath --> get_PrivateBinPath
'       set_PrivateBinPath --> set_PrivateBinPath
'       get_PrivateBinPathProbe --> get_PrivateBinPathProbe
'       set_PrivateBinPathProbe --> set_PrivateBinPathProbe
'       get_ShadowCopyDirectories --> get_ShadowCopyDirectories
'       set_ShadowCopyDirectories --> set_ShadowCopyDirectories
'       get_ShadowCopyFiles --> get_ShadowCopyFiles
'       set_ShadowCopyFiles --> set_ShadowCopyFiles

.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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