Export to Excel from DataTable without using Grid

public void ExportToExcel(DataTable dt)
{
 if (dt.Rows.Count > 0)
 {
 string filename = "DownloadMobileNoExcel.xls";
 System.IO.StringWriter tw = new System.IO.StringWriter();
 System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
 DataGrid dgGrid = new DataGrid();
 dgGrid.DataSource = dt;
 dgGrid.DataBind();
 //Get the HTML for the control.
 dgGrid.RenderControl(hw);
 //Write the HTML back to the browser.
 //Response.ContentType = application/vnd.ms-excel;
 Response.ContentType = "application/vnd.ms-excel";
 Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename + "");
 this.EnableViewState = false;
 Response.Write(tw.ToString());
 Response.End();
 }
}