How to bind a checkbox inside detailview edititemtemplate

Hi All,
I need to bind a checkbox inside detailview edititemtemplate in the .aspx page . The status column value is 1, 0 or NULL. Can anyone help me out how to bind the NULL value. if the value is 1 then checked otherwise, the checkbox is not checked.
<EditItemTemplate> <asp:CheckBox ID="CheckBox1" runat="server" Checked='<%# Bind("status")%>' Text="Yes" /> </EditItemTemplate>