how to bind single field of grid with multiple values using DataBinder.Eval
<p>i have one hidden field and i want to bind it with two values of my data base separated by an coma. some thing like 
->asp:HiddenField ID="hfRstidDate" runat="server" Value=&lt;%# DataBinder.Eval(Container.DataItem, "tsk_ID"),DataBinder.Eval(Container.DataItem, "Date_Worked").ToString())%><br>
pleas help </p>
