public string GetAttachment(int attID , out string errorMessage)
{
TDSettings.ConnectionRow connection = MyZillaSettingsDataSet.GetInstance().GetConnectionById(_connectionId);
string url = String.Concat(connection.URL, ATTACHMENT_PAGE, attID);
MyZilla.BL.Utils.HttpHelper httpDialog = new HttpHelper(_connectionId, connection.Charset);
string strFullPath = httpDialog.GetStreamFormUrl(url,out errorMessage );
return strFullPath;
}