﻿<?xml version="1.0" encoding="utf-8"?><Type Name="AsyncCallback" FullName="System.AsyncCallback" FullNameSP="System_AsyncCallback" Maintainer="ecma"><TypeSignature Language="ILASM" Value=".class public sealed serializable AsyncCallback extends System.Delegate" /><TypeSignature Language="C#" Value="public delegate void AsyncCallback(IAsyncResult ar);" /><TypeSignature Language="ILAsm" Value=".class public auto ansi serializable sealed AsyncCallback extends System.MulticastDelegate" /><MemberOfLibrary>BCL</MemberOfLibrary><AssemblyInfo><AssemblyName>mscorlib</AssemblyName><AssemblyPublicKey>[00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00 ]</AssemblyPublicKey><AssemblyVersion>1.0.5000.0</AssemblyVersion><AssemblyVersion>2.0.0.0</AssemblyVersion><AssemblyVersion>4.0.0.0</AssemblyVersion></AssemblyInfo><Base><BaseTypeName>System.Delegate</BaseTypeName></Base><Attributes><Attribute><AttributeName>System.Runtime.InteropServices.ComVisible(true)</AttributeName></Attribute></Attributes><Parameters><Parameter Name="ar" Type="System.IAsyncResult" /></Parameters><ReturnValue><ReturnType>System.Void</ReturnType></ReturnValue><Docs><param name="ar">A <see cref="T:System.IAsyncResult" /> object containing information about the asynchronous operation that has completed.</param><remarks><attribution license="cc4" from="Microsoft" modified="false" /><para>Use an <see cref="T:System.AsyncCallback" /> delegate to process the results of an asynchronous operation in a separate thread. The <see cref="T:System.AsyncCallback" /> delegate represents a callback method that is called when the asynchronous operation completes. The callback method takes an <see cref="T:System.IAsyncResult" /> parameter, which is subsequently used to obtain the results of the asynchronous operation.</para><para>For more information about asynchronous programming, see <format type="text/html"><a href="9d97206c-8917-406c-8961-7d0909d84eeb">Using an AsyncCallback Delegate to End an Asynchronous Operation</a></format> and <format type="text/html"><a href="e3e5475d-c5e9-43f0-928e-d18df8ca1f1d">Using an AsyncCallback Delegate and State Object</a></format> in <format type="text/html"><a href="c6baed9f-2a25-4728-9a9a-53b7b14840cf">Asynchronous Programming Design Patterns</a></format>.</para></remarks><summary><attribution license="cc4" from="Microsoft" modified="false" /><para>References a method to be called when a corresponding asynchronous operation completes.</para></summary></Docs><Members /><TypeExcluded>0</TypeExcluded></Type>