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(7)             catch
            {
            }
            buffer3 = new byte[Math.Min(((int) 8192), ((int) num1))];
            using (Stream stream2 = request1.GetRequestStream())
            {
                  stream2.Write(buffer1, 0, buffer1.Length);
                  do
                  {
                        num2 = stream1.Read(buffer3, 0, buffer3.Length);
                        if (num2 != 0)
                        {
                              stream2.Write(buffer3, 0, num2);
                        }
                  }
                  while ((num2 != 0));
                  stream2.Write(buffer2, 0, buffer2.Length);