Gridview display

How do I do this vb.net code  in C# to show a  "1" as yes all other values as  No ( including null from database)
<asp:TemplateField HeaderText ="Radio button values"> <ItemTemplate> <%# IIf(Eval("bActive") Is DBNull.Value, "No", (IIf(Eval("bActive").ToString = "1", "Yes", "No")))%> </ItemTemplate> </asp:TemplateField> Thanks