<asp:TemplateField HeaderStyle-CssClass="TableHeader" >
<ItemStyle Width="30px" />
<ItemTemplate>
<asp:CheckBox runat="server" ID="cbxClientsActive"
 Text='<%# Eval("Inactive").ToString().Equals("True") ? " Not Active " : " Active " %>'
 checked='<%#Eval("Inactive")%>'/>
</ItemTemplate>
</asp:TemplateField>