grid export to excel

How to Export Table Values In Asp.net into excel/gridview to excel

protected void btnExport_Click(object sender, EventArgs e)

    {

        DataTable dt =codeForgridbind

        if (dt.Rows.Count > 0)

        {

            gvSuscribers.DataSource = dt;

            gvSuscribers.DataBind();

        }

        else

        {

            idWarning.Visible = true;

        }

      

        GridView GridView1 = new GridView();

        GridView1.AutoGenerateColumns = true;

        dt.Columns.Remove("Suscribers_Id");

        dt.Columns.Remove("status");

      

        dt.AcceptChanges();

        GridView1.DataSource = dt;

        GridView1.DataBind();

        Response.ContentType = "application/excel";

        Response.AddHeader("content-disposition",       "attachment;filename='yourfilename'.xls");

        Response.Cache.SetCacheability(HttpCacheability.NoCache);

        StringWriter sw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(sw);

        GridView1.RenderControl(hw);

        Response.Write(sw.ToString());

        Response.End();

    }