asp.net large File Upload development summary (ii)

Source: Internet
Author: User
To provide the content of the file, we need to first determine the file content sent in the customer request, and then determine the location of the file contents. This section corresponds to the following code:

1HttpApplication app = sender as HttpApplication;
2            HttpWorkerRequest request = Getworkerrequest (app. context);
3           
4             if (! Isuploadrequest (app. Request) return; is not a file upload, exit
5           
6             string scontenttype = App. Request.ContentType.ToLower ();
7            byte[] arrboundary = GetMultipartBoundary ( Scontenttype);
8            int contentlength = app. Request.contentlength; Total length of the message body
9
10            DataReader DataReader = new DataReader (app. Context.Request.ContentEncoding,

Arrboundary);
11            DateTime startdate = DateTime.Now;
12            byte[] Arrbuffer = Request. Getpreloadedentitybody ();
13            if (arrbuffer = null)
14             {
15                 Arrbuffer = new Byte[0];
16                TempFile.Close ();
17                return;// Not read to the information body
18           }
19             Else
20         The

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