在WinForm中通过HTTP协议向服务器端上传文件

在WinForm中通过HTTP协议向服务器端上传文件(6)             this.CopyHeadersTo(request1);
            request1.Method = method;
            textArray1 = new string[7];
            textArray1[0] = "--";
            textArray1[1] = text1;
            textArray1[2] = "\r\nContent-Disposition: form-data; name=\"file\"; filename=\"";
            textArray1[3] = Path.GetFileName(fileName);
            textArray1[4] = "\"\r\nContent-Type: ";
            textArray1[5] = text2;
            textArray1[6] = "\r\n\r\n";
            text3 = string.Concat(textArray1);
            buffer1 = Encoding.UTF8.GetBytes(text3);
            buffer2 = Encoding.ASCII.GetBytes("\r\n--" + text1 + "\r\n");
            num1 = 9223372036854775807;
            try
            {
                  num1 = stream1.Length;
                  request1.ContentLength = ((num1 + ((long) buffer1.Length)) + ((long) buffer2.Length));
            }