ASP NET 2.0 - GridView export to EXCEL HELP

[johnlim20088]

Hi,

Hi someone can help me on this?

Currently I have a Listdata.aspx page with datagrid, I wish to export my datagrid content to excel with following code ( with button export click event):-

But when I run the code, it raise an error
-> Control 'ctl02_GridView 1' of type 'GridView' must be placed inside a form tag with runat=server"

My Listdata.aspx page are place under MasterPage.aspx , which is inside Contentplace holder. how to solve this? I can't put my GridView1 in Master page, cause Listdata.aspx are inside contentplace holder of Master page. Please help

protected void btnExport_Click (object sender, EventArgs e)
{
PrepareGridView ForExport(GridV iew1);
ExportTerminati onLog();
}

private void PrepareGridView ForExport(Contr ol gv)
{
LinkButton lb = new LinkButton();
Literal l = new Literal();

string name = String.Empty;

for (int i = 0; i < gv.Controls.Cou nt; i++)
{

if (gv.Controls[i].GetType() == typeof(LinkButt on))
{

l.Text = (gv.Controls[i] as LinkButton).Tex t;

gv.Controls.Rem ove(gv.Controls[i]);

gv.Controls.Add At(i, l);

}

else if (gv.Controls[i].GetType() == typeof(DropDown List))
{

l.Text = (gv.Controls[i] as DropDownList).S electedItem.Tex t;

gv.Controls.Rem ove(gv.Controls[i]);

gv.Controls.Add At(i, l);

}

else if (gv.Controls[i].GetType() == typeof(CheckBox ))
{

l.Text = (gv.Controls[i] as CheckBox).Check ed ? "True" : "False";

gv.Controls.Rem ove(gv.Controls[i]);

gv.Controls.Add At(i, l);

}

if (gv.Controls[i].HasControls())
{
PrepareGridView ForExport(gv.Co ntrols[i]);
}
}
}


private void ExportTerminati onLog()
{

string attachment = "attachment ; filename=Termin ation.xls";
Response.ClearC ontent();
Response.AddHea der("content-disposition", attachment);
Response.Conten tType = "applicatio n/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter( sw);
GridView1.Rende rControl(htw);
Response.Write( sw.ToString());
Response.End();
}