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(13)   /// Adds POST form variables to the request buffer.
  /// HttpPostMode determines how parms are handled.
  /// 1 - UrlEncoded Form Variables. Uses key and value pairs (ie. "Name","Rick") to create URLEncoded content
  /// 2 - Multi-Part Forms - not supported
  /// 4 - XML block - Post a single XML block. Pass in as Key (1st Parm)
  /// other - raw content buffer. Just assign to Key.
  /// </summary>
  /// <param name="Key">Key value or raw buffer depending on post type</param>
  /// <param name="Value">Value to store. Used only in key/value pair modes</param>
  public void AddPostKey(string Key, byte[] Value)
  {
   
   if (this.oPostData == null)
   {
    this.oPostStream = new MemoryStream();
    this.oPostData = new BinaryWriter(this.oPostStream);
   }
   
   if (Key == "RESET")
   {
    this.oPostStream = new MemoryStream();
    this.oPostData = new BinaryWriter(this.oPostStream);
   }

   switch(this.nPostMode)
   {
    case 1:
     this.oPostData.Write(Encoding.GetEncoding(1252).GetBytes(
          Key + "=" + System.Web.HttpUtility.UrlEncode(Value) + "&"));
     break;
    case 2:
     this.oPostData.Write( Encoding.GetEncoding(1252).GetBytes(
      "--" + this.cMultiPartBoundary + "\r\n" +