Simple and practical.net DataTable export Execl

DataTable export Execl
The code is too simple. Let's just look at the code.

    protected void btnPrint_Click(object sender, EventArgs e)
    {
        string strPath = "MFOut" + DateTime.Now.ToString("yyyymmddhhmmssfff") + ".xls";
        DataGrid dg = new DataGrid();
        dg.DataSource = dtMain;
        dg.DataBind();
        Response.Clear();
        Response.AddHeader("content-disposition", "attachment;filename=" + strPath + "");
        Response.Charset = "gb2312";
        Response.ContentEncoding = System.Text.Encoding.UTF8;// If you don't set it, there will be messy code 
        Response.ContentType = "application/vnd.xls";
        System.IO.StringWriter stringWrite = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
        dg.RenderControl(htmlWrite);
        Response.Write(stringWrite.ToString());
        Response.End();
    }
    public override void VerifyRenderingInServerForm(Control control)
    {
        // This method cannot be deleted   When exporting, it should be used, otherwise an error will be reported: 
        // Type" GridView "Control" ctl00_ContentPlaceHolder1_GridView1 "Must be placed in having  runat=server  Inside the form tag 
    }