Inserting Text box in header template of grid view

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Hello All,
I am trying to insert a text inside a header template like the below code:---

XML

<asp:TemplateField HeaderText="PlanningId" ItemStyle-CssClass="TACenter">
        <HeaderTemplate>
         Planning Id<br />
            <asp:TextBox ID="txt_planningid" runat="server"></asp:TextBox>
        </HeaderTemplate>
        </asp:TemplateField>

But While doing the above code i am getting the following error:-

Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControls.LinkButton'.

Please give me solution as early as possible,its urgent.

Thank you

Posted 4-Mar-13 1:44am

Member 8624186

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Nandakishore G N 5-Mar-13 2:23am

the error is showing the reason..i.e, literal control to linkbutton.probably in your rowdatabound or any grid related events of codebehind you have written (Literal) instead of (LinkButton)..check it..

3 solutions

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MalwareTrojan · Answer 1 · 2013-03-04T01:48:00

Solution 1

In header, you cannot use controls.
If your Heading will be dynamic; then use Label On the top of your Page.

Posted 4-Mar-13 1:48am

MalwareTrojan

v2

Comments

Member 8624186 4-Mar-13 23:07pm

We can add controls in header,the above code is working perfectly fine in another page,but i m not getting what is the problem in this page and what do you mean by this exception?

MalwareTrojan · Answer 2 · 2013-03-04T19:13:00

Solution 2

http://forums.asp.net/t/1228689.aspx/1[^]

Posted 4-Mar-13 19:13pm

MalwareTrojan

Member 8624186 · Answer 3 · 2013-03-04T19:44:00

Solution 3

I have used sorting in gridview.It was using some sortdirection variable of System.Web.UI.WebControls .And when i removed sorting from my page,there was no exception.

Posted 4-Mar-13 19:44pm

Member 8624186