Print data in Excel

using System.Xml;
using System.Xml.Xsl;
using System.IO;
using System.Drawing;

 Public void ExportToExcel(DataTable dt, string FileName)
    {
        if (dt.Rows.Count > 0)
        {
            string filename = FileName + ".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();
        }
    }