internal HttpPostedFile(String filename, String contentType, HttpInputStream stream)
 {
     _filename    = filename;
     _contentType = contentType;
     _stream      = stream;
 }
 internal HttpPostedFile(String filename, String contentType, HttpInputStream stream) {
     _filename = filename;
     _contentType = contentType;
     _stream = stream;
 }
 internal HttpPostedFile(string filename, string contentType, HttpInputStream stream)
 {
     this._filename    = filename;
     this._contentType = contentType;
     this._stream      = stream;
 }
 internal HttpPostedFile(string filename, string contentType, HttpInputStream stream)
 {
     this._filename = filename;
     this._contentType = contentType;
     this._stream = stream;
 }