private DataSet GetDocs()
 {
     DataSet dsRpAdvances = new DataSet();
     try
     {
         Whitfield_Project _wc = new Whitfield_Project();
         dsRpAdvances = _wc.GetDocumentsforProject(Convert.ToInt32(ViewState["EstNum"].ToString()), Convert.ToInt32(ViewState["twc_project_number"].ToString()));
     }
     catch (Exception exp)
     {
         Response.Write(exp.Message.ToString());
     }
     return dsRpAdvances;
 }