Type.GetMethodImpl Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

When overridden in a derived class, searches for the specified method whose parameters match the specified argument types and modifiers, using the specified binding constraints and the specified calling convention.

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


Protected MustOverride Function GetMethodImpl ( _
    name As String, _
    bindingAttr As BindingFlags, _
    binder As Binder, _
    callConvention As CallingConventions, _
    types As Type(), _
    modifiers As ParameterModifier() _
) As MethodInfo
protected abstract MethodInfo GetMethodImpl(
    string name,
    BindingFlags bindingAttr,
    Binder binder,
    CallingConventions callConvention,
    Type[] types,
    ParameterModifier[] modifiers


  • binder
    Type: System.Reflection..::.Binder
    A Binder object that defines a set of properties and enables binding, which can involve selection of an overloaded method, coercion of argument types, and invocation of a member through reflection.
    A null reference (Nothing in Visual Basic), to use the DefaultBinder.
  • types
    Type: array<System..::.Type>[]()[]
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    An empty array of the type Type (that is, Type[] types = new Type[0]) to get a method that takes no parameters.
    A null reference (Nothing in Visual Basic). If types is nullNothingnullptra null reference (Nothing in Visual Basic), arguments are not matched.

Return Value

Type: System.Reflection..::.MethodInfo
A MethodInfo object representing the method that matches the specified requirements, if found; otherwise, nullNothingnullptra null reference (Nothing in Visual Basic).


Exception Condition

More than one method is found with the specified name and matching the specified binding constraints.


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


types is multidimensional.


modifiers is multidimensional.


types and modifiers do not have the same length.


Although the default binder does not process ParameterModifier (the modifiers parameter), you can use the abstract System.Reflection..::.Binder class to write a custom binder that does process modifiers. ParameterModifier is only used when calling through COM interop, and only parameters that are passed by reference are handled.

If types is nullNothingnullptra null reference (Nothing in Visual Basic), arguments are not matched.

The types array and the modifiers array have the same length. A parameter specified in the types array can have the following attributes, which are specified in the modifiers array: pdIn, pdOut, pdLcid, pdRetval, pdOptional, and pdHasDefault, which represent [In], [Out], [lcid], [retval], [optional], and a value specifying whether the parameter has a default value. A parameter's associated attributes are stored in the metadata and enhance interoperability.

The following BindingFlags filter flags can be used to define which methods to include in the search:

  • You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.

  • Specify BindingFlags.Public to include public methods in the search.

  • Specify BindingFlags.NonPublic to include non-public methods (that is, private and protected methods) in the search.

  • Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.

The following BindingFlags modifier flags can be used to change how the search works:

  • BindingFlags.IgnoreCase to ignore the case of name.

  • BindingFlags.DeclaredOnly to search only the methods declared on the Type, not methods that were simply inherited.

See System.Reflection..::.BindingFlags for more information.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0


Windows Phone

See Also


Type Class

System Namespace