可用于大文件上传 以及 需长时间执行的任务，可反馈出任务执行进度，如下图
资源文件列表
AsyncProcessor/AsyncProcessManager.cs , 5303
AsyncProcessor/AsyncProcessor.csproj , 4912
AsyncProcessor/AsyncProcessor.csproj.user , 1360
AsyncProcessor/AsyncProcessorDetail.cs , 3619
AsyncProcessor/bin/AsyncProcessor.dll , 17920
AsyncProcessor/bin/AsyncProcessor.pdb , 46592
AsyncProcessor/controls/asyncProcessingMonitor.ascx , 2432
AsyncProcessor/controls/asyncProcessingMonitor.ascx.cs , 4878
AsyncProcessor/controls/asyncProcessingMonitor.ascx.designer.cs , 5935
AsyncProcessor/Default.aspx , 1047
AsyncProcessor/Default.aspx.cs , 3203
AsyncProcessor/Default.aspx.designer.cs , 2217
AsyncProcessor/images/async1.jpg , 89668
AsyncProcessor/images/async2.jpg , 133875
AsyncProcessor/images/async3.jpg , 144749
AsyncProcessor/images/pleasewait.gif , 1522
AsyncProcessor/obj/Debug/AsyncProcessor.csproj.FileListAbsolute.txt , 340
AsyncProcessor/obj/Debug/AsyncProcessor.dll , 17920
AsyncProcessor/obj/Debug/AsyncProcessor.pdb , 46592
AsyncProcessor/ProcessorExample.cs , 3403
AsyncProcessor/ProcessorTemplate.cs , 3729
AsyncProcessor/Properties/AssemblyInfo.cs , 1403
AsyncProcessor/styles.css , 131
AsyncProcessor/Web.config , 7368