'GridView' must be placed inside a form tag with runat=server

[abutaher]

Hi,
I've an asp.net .ascx form and a gridview on that form.I've placed that form on an .aspx. Now while I'm trying to import data from gridview to excel it is showing the error "Control 'GridView' must be placed inside a form tag with runat=server"

I've overrides the ascx as follow :

Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
MyBase.Render(writer)
End Sub

But still it is shwoing the same error.
Could anyone help me please.

[sivabe]

Check your html code..
whether the form tag occured or not....
in the form tag you have add runat =server

[abutaher]

Check your html code..
whether the form tag occured or not....
in the form tag you have add runat =server

Yes it is there as below :
<form id="form1" runat="server">

[Plater]

Yes it is there as below :
<form id="form1" runat="server">

And your GridView tag occurs between the <form> and </form> tags and ALSO has the runat="server" attribute?

[abutaher]

And your GridView tag occurs between the <form> and </form> tags and ALSO has the runat="server" attribute?

Yes.See the code below :

<form id="form1" runat="server">
<div>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td>
<img src="Images/Title.jpg" unselectable="on" /></td>
<td style="width: 3px">
</td>
</tr>
<tr>
<td>
<uc1:WrongCode ID="WrongCode1" runat="server" />
</td>
<td style="width: 3px">
</td>
</tr>
</table>

</div>
</form>

[Plater]

Well I don't see a gridview, I see a custom control.
It would look like the troubles are withen the custom control somewhere then?