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Hi there,
I am using this code that I have found in the internet to generate excel
output.

Response.Clear();
Response.AddHeader("content-disposition",
"attachment;filename=kirim.xls");
Response.Charset = "";

// If you want the option to open the Excel file without saving than
// comment out the line below
// Response.Cache.SetCacheability(HttpCacheability.No Cache);

Response.Cache.SetCacheability(HttpCacheability.No Cache);
Response.ContentType = "application/vnd.xls";

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

//gv.RenderControl(htmlWrite);
this.RenderControl(htmlWrite);

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


But I've got this error (Exception) bellow when Response.End() issue.
"Unable to evaluate expression because the code is optimized or a native
frame is on top of the call stack."

How to correct this issue?

Regards,
Gun

Thank you for your reply

change to this
>> gv.RenderControl(htmlWrite);
>> //this.RenderControl(htmlWrite);

I have this error when rendering GridView
"Control 'gv' of type 'GridView' must be placed inside a form tag with
runat=server."


<form id="frmRencanaKirim" runat="server">
<div>
<asp:GridView ID="gv" runat="server"
AutoGenerateColumns="False"
ForeColor="#333333"
CellPadding="2"
AllowPaging="false"
ShowFooter="True">
<HeaderStyle BackColor="#507CD1"
Font-Bold="True" ForeColor="White"/>
<FooterStyle BackColor="#507CD1"
Font-Bold="True" ForeColor="White" />
<RowStyle BackColor="#EFF3FB" Height="25px" />
<AlternatingRowStyle BackColor="White" />
<Columns>
...
</Columns>
</asp:GridView>
<asp:Label ID="lbMessage" runat="server" Text=" "
ForeColor="Red" Visible="False" />
</div>
</form>


What's wrong?


"MasterGaurav (www.edujini-labs.com)" <>
wrote in message news:...
>> System.IO.StringWriter stringWrite = new System.IO.StringWriter();
>> System.Web.UI.HtmlTextWriter htmlWrite =
>> new HtmlTextWriter(stringWrite);
>>
>> //gv.RenderControl(htmlWrite);
>> this.RenderControl(htmlWrite);
>
> It should not be this.RenderControl but gridView.RenderControl(htmlWrite)
>
> It's the GridView that has to be rendered and not the page (this)!!!
>
> --
> Happy Hacking,
> Gaurav Vaish | www.mastergaurav.com
> www.edujini-labs.com
> http://eduzine.edujini-labs.com
> -----------------------------------------
>
>

I have tried follow your suggestion...

After all, it back to original issue.

"Unable to evaluate expression because the code is optimized or a native
frame is on top of the call stack."


"MasterGaurav (www.edujini-labs.com)" <>
wrote in message news:%23PCTRU$...
>> I have this error when rendering GridView
>> "Control 'gv' of type 'GridView' must be placed inside a form tag with
>> runat=server."
>
> Ensure that you override the method "VerifyRenderingInServerForm" with no
> code:
>
> public override void VerifyRenderingInServerForm(Control control)
>
> {
>
> //don't throw any exception!
>
> }
>
>
>
> --
> Happy Hacking,
> Gaurav Vaish | www.mastergaurav.com
> www.edujini-labs.com
> http://eduzine.edujini-labs.com
> -----------------------------------------
>
>

I have, didn't I? On my first post.

Error occurred when issue Response.End();
No matter what data that I would like to show in gridview.
Regards,
Gun

"MasterGaurav (www.edujini-labs.com)" <>
wrote in message news:ecItI%...
> >I have tried follow your suggestion...
>>
>> After all, it back to original issue.
>>
>> "Unable to evaluate expression because the code is optimized or a native
>> frame is on top of the call stack."
>
>
> Can you put up the entire code for download somewhere?
>
> --
> Happy Hacking,
> Gaurav Vaish | www.mastergaurav.com
> www.edujini-labs.com
> http://eduzine.edujini-labs.com
> -----------------------------------------
>
>