A delegate to a method that returns no values, and takes one parameter. [Edit]

public delegate void Action<T> (T obj)

Type Parameters

T

The type. [Edit]

Parameters

obj

The object on which to perform an action. [Edit]

Remarks

Since the compiler can infer the types, you do not need to provide the type, this is typically used with the System.Array.Foreach method or the List's ForEach method.

C# Example

// // Simple "echo" implementation // using System; class X { static void Main (string [] args) { Array.ForEach (args, print); Console.WriteLine (); } static void print (string a) { Console.Write (a); Console.Write (" "); } }

[Edit]

Requirements

Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0