Problem with visible button false when exporting data to Excel

Question

Hello everyone. I am using C # .net to create a web application. I am making a webpage that exports gridview data to excel. My code is as follows

    protected void btnexport_Click(object sender, EventArgs e)
    {
        btnsubmit.Visible = false;
        exporttoexcel();
        expToExcel();
    }

    public override void VerifyRenderingInServerForm(Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }

    public void exporttoexcel()
    {
        Context.Response.Clear();

        Context.Response.AddHeader("content-disposition", "attachment;filename=FileName.xls");

        Context.Response.Charset = "";

        Context.Response.Cache.SetCacheability(HttpCacheability.NoCache);

        Context.Response.ContentType = "application/vnd.xls";

        System.IO.StringWriter stringWrite = new System.IO.StringWriter();

        System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);

        GridView1.RenderControl(htmlWrite);

        Context.Response.Write(stringWrite.ToString());

        Context.Response.End();

    }

My gridview data is an export to excel, but on the EXPORTTOEXCEL click the click button. I'm trying to enter the false visibility property of another submit button, but I can do it like that, please tell me how I set the visible property to false EXPORTTOEXCEL button click event

Please give me an answer, soon my work is in the middle of the way

thank everyone in advance

Answer 1

false , Excel. , .

, , Excel. , javascript , .

javascript OnClientClick:

document.getElementById('<%=btnexport.ClientID%>').style.display = none;