problem to visible false of button when export data to excel
<p>Hello Everybody I am using c#.net to make webapplication.
I am making a webpage that export gridview data to excel. My code is as follow</p>

<pre><code>    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();

    }
</code></pre>

<p>My gridview data is export to excel successfully but on EXPORTTOEXCEL button click event i am trying to false the visible property of another button submit, but i am successful to do it so please tell me how i set the visible property to false  on EXPORTTOEXCEL button click event</p>

<p>Please give me reply soon my work is in midway </p>

<p>thank u to all in advance</p>
