Asp.net 将Gridview导出到Excel，但将整个aspx页面导出

这是代码。但是Excel文件显示的是整个aspx页面，而不是gridview

Protected Sub btnExport_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExport.Click
    Try

        Response.Clear()
        Response.AddHeader("content-disposition", ("attachment;filename=HotelList_" & DateTime.Now.Year.ToString().Trim()) + DateTime.Now.Month.ToString().Trim().PadLeft(2, Convert.ToChar("0")) + DateTime.Now.Day.ToString().Trim().PadLeft(2, Convert.ToChar("0")) & ".xls")
        Response.Charset = ""
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Response.ContentType = "application/vnd.ms-excel"

        Dim stringWrite As New System.IO.StringWriter
        Dim htmlWrite As System.Web.UI.HtmlTextWriter = New HtmlTextWriter(stringWrite)

        Dim selctedCountry As String = ddlCountry.SelectedItem.Text.ToString()
        Dim selCity As String = ddlCity.SelectedItem.Text.ToString()

        htmlWrite.Write("<div style='PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px'><h3>HOTEL LIST</h3>")
        htmlWrite.Write("<table><tr><td colspan='2'> Country  : " & selctedCountry & " </td></tr>")
        htmlWrite.Write("<table><tr><td colspan='2'> City     : " & selCity & " </td></tr>")

        gvHotelMarkup.RenderControl(htmlWrite)
        htmlWrite.Write("</div>")

        Response.Write(stringWrite.ToString())
        Response.End()


    Catch ex As Exception
        lblErrMessage.Message = ex.Message()
    End Try

End Sub

Protected Sub btnExport\u Click（ByVal sender作为对象，ByVal e作为System.EventArgs）处理btnExport。单击
尝试
答复:Clear()
Response.AddHeader（“content disposition”（“attachment；filename=HotelList_”）和DateTime.Now.Year.ToString（）.Trim（））+DateTime.Now.Month.ToString（）.Trim（）.PadLeft（2，Convert.ToChar（“0”）+DateTime.Now.Day.ToString（）.Trim（）.PadLeft（2，Convert.ToChar（“0”）和“.xls”）
Response.Charset=“”
Response.Cache.SetCacheability（HttpCacheability.NoCache）
Response.ContentType=“应用程序/vnd.ms excel”
Dim stringWrite作为新System.IO.StringWriter
Dim htmlWrite As System.Web.UI.HtmlTextWriter=新的HtmlTextWriter（stringWrite）
Dim selctedCountry As String=ddlCountry.SelectedItem.Text.ToString（）
Dim selCity As String=ddlCity.SelectedItem.Text.ToString（）
htmlWrite.Write（“酒店列表”）
htmlWrite.Write（“国家：&selctedCountry&”）
htmlWrite.Write（“城市：&selCity&”）
gvHotelMarkup.RenderControl（htmlWrite）
htmlWrite.Write（“”）
Response.Write（stringWrite.ToString（））
答复:End()
特例
lblErrMessage.Message=ex.Message（）
结束尝试
端接头

你知道怎么解决这个问题吗？

---

提前谢谢。

我不确定到底是什么问题，但当我将此添加到codebehind时，它工作得非常好

  Public Overrides Sub VerifyRenderingInServerForm(ByVal control As Control)
        ' Confirms that an HtmlForm control is rendered for the specified ASP.NET
        '               server control at run time. 

    End Sub

---

下载关闭DXML库

using ClosedXML.Excel;   
using System.IO;
using System.Data;

Protected Sub btnExport_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExport.Click

DataTable dt = new DataTable("GridView_Data");
foreach(TableCell cell in GridView1.HeaderRow.Cells)
{
    dt.Columns.Add(cell.Text);
}
foreach (GridViewRow row in GridView1.Rows)
{
    dt.Rows.Add();
    for (int i=0; i<row.Cells.Count; i++)
    {
        dt.Rows[dt.Rows.Count - 1][i] = row.Cells[i].Text;
    }
}
using (XLWorkbook wb = new XLWorkbook())
{
    wb.Worksheets.Add(dt);

    Response.Clear();
    Response.Buffer = true;
    Response.Charset = "";
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    Response.AddHeader("content-disposition", "attachment;filename=GridView.xlsx");
    using (MemoryStream MyMemoryStream = new MemoryStream())
    {
        wb.SaveAs(MyMemoryStream);
        MyMemoryStream.WriteTo(Response.OutputStream);
        Response.Flush();
        Response.End();
    }
}

使用ClosedXML.Excel；
使用System.IO；
使用系统数据；
受保护的子btnExport_Click（ByVal sender作为对象，ByVal e作为System.EventArgs）处理btnExport。单击
DataTable dt=新的DataTable（“GridView_数据”）；
foreach（GridView1.HeaderRow.Cells中的TableCell单元格）
{
dt.Columns.Add（cell.Text）；
}
foreach（GridView1.Rows中的GridViewRow行）
{
dt.Rows.Add（）；
对于（inti=0；iHi，感谢您的回答。我添加了这个，但它仍然导出整个页面。