How to convert declarative to code behind

I was hoping someone could show me how to convert the following to code behind with using unbound controls. Thank you  <body>
<form id="Form1" runat="server">
<h3>ObjectDataSource Example</h3>
<asp:Label id="Msg" runat="server" ForeColor="Red" />
<asp:ObjectDataSource
ID="EmployeesObjectDataSource"
runat=" ...