what is the code for exporting data from datagridview to ms-word in windows application

protected void Button1_Click(object sender, EventArgs e)
{
    Response.Clear();
    Response.Buffer = true;
    
    Response.AddHeader("content-disposition", "attachment;filename=FileName.doc");
    
    Response.ContentEncoding = System.Text.Encoding.UTF7;
    Response.ContentType = "application/vnd.word";
    System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
    System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
    this.GridView1.RenderControl(oHtmlTextWriter);
    Response.Output.Write(oStringWriter.ToString());
    Response.Flush();
    Response.End();
}