A page can have only one server-side Form tag. error in exporting grid view in excel

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Hello All
i am getting A page can have only one server-side Form tag. on exporting grid view in excel in asp.net. grid view is on content page with master page and master page has only one form tag.
for exporting i have done the following code.

Response.Clear();
               Response.ContentType = "application/vnd.xls";
               Response.AddHeader("content-disposition",
                       "attachment;filename=subscribers.xls");

               StringWriter swriter = new StringWriter();
               HtmlTextWriter hwriter = new HtmlTextWriter(swriter);

               HtmlForm frm = new HtmlForm();
               this.gvViewSearch.Parent.Controls.Add(frm);
               frm.Attributes["runat"] = "server";
               frm.Controls.Add(this.gvViewSearch);
               frm.RenderControl(hwriter);

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

C#

public override void VerifyRenderingInServerForm(Control control)
        {
        }

plz help me.

Posted 16-Jul-12 2:47am

Umashankar Yadav

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2 solutions

Solution 2

Try this:
Comment out the following:

C#

//public override void VerifyRenderingInServerForm(Control control)
//{
//}

Compiler might be getting confused because of it. See if this works.

Posted 16-Jul-12 4:58am

Sandeep Mewara

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Umashankar Yadav 16-Jul-12 11:17am

Sorry!!! its not working...

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JakirBB · Accepted Answer · 2012-07-16T03:07:00

Solution 1

Perhaps the code you have written here is under code behind file of the content page. So think that, here you have created a server side form and there is server side form on Master page. so when you try to render this page then this form loads in another form. which is not allowed. Does this make sense?

Posted 16-Jul-12 3:07am

JakirBB

Updated 16-Jul-12 3:09am

v2

Comments

Umashankar Yadav 16-Jul-12 9:18am

not getting solution

JakirBB 16-Jul-12 9:35am

Though I'm not sure whether it'll work or not (don't blame me), I can devise a way. Just try it. And let me know whether its works or not.
Assign a ID to your MasterPage Form [ie. <form runat="server" id="TestForm">]

Now use this form in you content form instead of creating a new one.
[ie. this.Master.FindControl("TestForm")]

Nabil1404 24-Aug-13 5:44am

how to use it?

Umashankar Yadav 16-Jul-12 11:06am

thanks now it working