HttpWorkerRequest疑问[问题解决另开百分相送]

[OenAuth.Core]

我做一个上传的东东，用到httpworkerrequest这个东西，可我得到的都是整个网页请求的内容，如表单的名字，ID等，我怎样从这些信息里面提取出我要上传的文件内容呢？该问题如不能回答，那请解释下下面这段程序是什么意思？本版权限有限，解决问题定高分相谢

		private void context_BeginRequest(object sender, EventArgs e)
		{
			
			HttpApplication app = sender as HttpApplication;
			HttpWorkerRequest worker = GetWorkerRequest(app.Context);

			uploadKey = app.Context.Request.QueryString["guid"] + "uploadprogress";
			contentLengthKey = app.Context.Request.QueryString["guid"] + "uploadlength";
			rwl = new ReaderWriterLock();

			int bufferSize = (int)app.Application[bufferSizeKey];
			//check whether the page is an upload page
			if (IsUploadPages())
			{

　　　　　　　　　　　　　　//主要就是从下面开始我不太懂


				if (app.Context.Request.ContentLength > 0)
				{
					TotalSize = app.Context.Request.ContentLength;
					MemoryStream mem = new MemoryStream(app.Context.Request.ContentLength);
					byte [] data = worker.GetPreloadedEntityBody();
					mem.Write(data,  0, data.Length);
					int read = 0;
					int counter = data.Length;
		
					while (counter < app.Context.Request.ContentLength)
					{
						if (counter + bufferSize > app.Context.Request.ContentLength)
							bufferSize = app.Context.Request.ContentLength - counter;
						data = new byte[bufferSize];
						CurrentSize = counter;
						read = worker.ReadEntityBody(data, bufferSize);
						counter += read;
						mem.Write(data,  0, bufferSize);
					}
				
					mem.Position = 0;
					byte [] memData  = new byte[mem.Length];
					mem.Read(memData, 0, (int)mem.Length);

                   
                    
					PushRequestToIIS(worker, memData);
				}
			}
		}

[OenAuth.Core]

自己解决先，最后一次UP

[yagebu1983]

楼主，你看不懂的地方实际上就是用流读取文件。。。。。。

[liujiayu10]

解决了吗？

[OenAuth.Core]

没有，想用别的办法，结果越弄越乱，喝咖啡中....

[OenAuth.Core]

我测试的时候，觉得应该是把所以网页请求的信息存放在mem这个流里面，我想把流里面的上传文件内容提出来写到文件里面，可惜一直未成功，望高手帮忙。小弟不胜感激。

[OenAuth.Core]

代码全文：
http://www.codeproject.com/KB/webforms/File_Upload_Progress_Bar.aspx?fid=155656&df=90&mpp=25&noise=3&sort=Position&view=Quick

[大神来了丶]

学习

[大神来了丶]

学习

[OenAuth.Core]

自己UP