Check NULL value at serverside using EVAL in Itemtemplate Gridview

<ItemTemplate>
<asp:Label ID="Label1" runat="server" 
           Text='<%# CheckNull(Eval("Location")) %>'>
</asp:Label>
</ItemTemplate>

protected string CheckNull(object objGrid)    

{ if (object.ReferenceEquals(objGrid, DBNull.Value))        

{ return "No Record Found"; }        

else { return objGrid.ToString(); }     

}