/// <summary>
/// Exportar a excel
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void ibExportToExcel_Click(object sender, ImageClickEventArgs e)
{
//gvReturns.AllowPaging = false;
//GridViewExportUtil.removeFormats(ref gvReturns);
//gvReturns.DataBind();
//string nameFile = "OperacionesGratuitas";
//// pass the grid that for exporting ...
//GridViewExportUtil.Export(nameFile + ".xls", gvReturns);
DataTable dt = (DataTable)Session[_nameSessionData];
GridViewExportUtil.ExportarExcel(dt, "", "2,4", "OPeracionesGratuitas");
}