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Type.GetMethod Method (String, Type[])

Searches for the specified public method whose parameters match the specified argument types.

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

public MethodInfo GetMethod (
	string name,
	Type[] types
)
public final MethodInfo GetMethod (
	String name, 
	Type[] types
)
public final function GetMethod (
	name : String, 
	types : Type[]
) : MethodInfo
Not applicable.

Parameters

name

The String containing the name of the public method to get.

types

An array of Type objects representing the number, order, and type of the parameters for the method to get.

-or-

An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.

Return Value

A MethodInfo object representing the public method whose parameters match the specified argument types, if found; otherwise, a null reference (Nothing in Visual Basic).
Exception typeCondition

AmbiguousMatchException

More than one method is found with the specified name and specified parameters.

ArgumentNullException

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

-or-

types is a null reference (Nothing in Visual Basic).

-or-

One of the elements in types is a null reference (Nothing in Visual Basic).

ArgumentException

types is multidimensional.

The search for name is case-sensitive. The search includes public static and public instance methods.

If the requested method is non-public and the caller does not have ReflectionPermission to reflect non-public objects outside the current assembly, this method returns a null reference (Nothing in Visual Basic).

NoteNote:

You cannot omit parameters when looking up constructors and methods. You can only omit parameters when invoking.

If the current T:System.Type represents a constructed generic type, this method returns the MethodInfo 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 methods of the class constraint, or the methods of Object if there is no class constraint.

NoteNote:

The name parameter cannot include type arguments. For example, the C# code GetMethod("MyGenericMethod<int>") searches for a method with the text name "MyGenericMethod<int>", rather than for a method named MyGenericMethod that has one generic argument of type int.

The following example finds specific overloads of MethodA, specifying a variety of argument types.

NoteNote:

The Visual C# 2005 example requires the /unsafe compiler option.


using System;
using System.Reflection;

class Program
{
    // Methods to get:

    public void MethodA(int i, int j) { }

    public void MethodA(int[] i) { }

    public unsafe void MethodA(int* i) { }

    public void MethodA(ref int r) {}

    // Method that takes an out parameter:
    public void MethodA(int i, out int o) { o = 100;}


  static void Main(string[] args)
  {
    MethodInfo mInfo;

    // Get MethodA(int i, int i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int), typeof(int) });
    Console.WriteLine("Found method: {0}", mInfo);

    // Get MethodA(int[] i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int[]) });
    Console.WriteLine("Found method: {0}", mInfo);

    // Get MethodA(int* i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int).MakePointerType() });
    Console.WriteLine("Found method: {0}", mInfo);

    // Get MethodA(ref int r)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int).MakeByRefType() });
    Console.WriteLine("Found method: {0}", mInfo);

    // Get MethodA(int i, out int o)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int), typeof(int).MakeByRefType() });
    Console.WriteLine("Found method: {0}", mInfo);

  }
}


import System.*;
import System.Reflection.*;

public class Program
{
	// Methods to get:

	// Method that takes two integers:
	public void MethodA(int i, int j) { }
	// Method that takes an array
	public void MethodA(int[] i) { }

    public static void main(String[] args)
    {
		MethodInfo mInfo;
		Type tProgram = Program.class.ToType();


		// Get  MethodA(Int32, Int32)
		mInfo = tProgram.GetMethod("MethodA",
			new Type[] { int.class.ToType(), int.class.ToType()});
		Console.WriteLine("Found method: {0}", mInfo);

		// Get MethodA(int[])
		mInfo = tProgram.GetMethod("MethodA",
			new Type[] { int[].class.ToType() });
		Console.WriteLine("Found method: {0}", mInfo);

    }
}


Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0
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