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(17)      }
    }
    
    // *** Handle cookies - automatically re-assign
    if (this.bHandleCookies)
    {
     Request.CookieContainer = new CookieContainer();
     if (this.oCookies != null && this.oCookies.Count > 0)
     {
      Request.CookieContainer.Add(this.oCookies);
     }
    }

    // *** Deal with the POST buffer if any
    if (this.oPostData != null)
    {
     Request.Method = "POST";
     switch (this.nPostMode)
     {
      case 1:
       Request.ContentType = "application/x-www-form-urlencoded";
       // strip off any trailing & which can cause problems with some
       // http servers
//       if (this.cPostBuffer.EndsWith("&"))
//        this.cPostBuffer = this.cPostBuffer.Substring(0,this.cPostBuffer.Length-1);
       break;
      case 2:
       Request.ContentType = "multipart/form-data; boundary=" + this.cMultiPartBoundary;
       this.oPostData.Write( Encoding.GetEncoding(1252).GetBytes( "--" + this.cMultiPartBoundary + "\r\n" ) );
       break;
      case 4:
       Request.ContentType = "text/XML";