If an SQLDatasource is defined thus:
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:maillist %>"
ProviderName="<%$ ConnectionStrings:maillist.ProviderName %>"
SelectCommand="SELECT * FROM list_definitions WHERE (list_id = ?)"
DeleteCommand="DELETE FROM list_definitions WHERE list_id = ?"
InsertCommand="INSERT INTO list_definitions (name, description, owner) VALUES (?, ?, ?)"
UpdateCommand="UPDATE list_definitions SET filename = ?, name = ?, description = ?, owner = ? WHERE list_id = ?">
<SelectParameters>
<asp:SessionParameter Name= Go to the complete details ...