Adding WebUserControl To Gridview In C#?

Nov 4, 2010

I want to add a webusercontol which contains a textbox and a label to the gridview control. I am binding a gridview with a datatable dynamically.

Here is my code:

@ Register Src="CompareBox.ascx" TagName="CompareBox" TagPrefix="objCompareBox" %><br>
<asp:GridView ID="grdfoneBoxContainer" runat="server">
<asp:TemplateField HeaderText="User control"> <br>
<objCompareBox:CompareBox ID="CompareBoxCol1" runat="server"/><br>.......

txt & lbl are two properties that are declared in WebUserControl but it's giving object reference error .

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