There are several articles describing how to do this is code behind however:
Is it possible to set the value of a dropdownlist to a session variable on the aspx page?
I am using SqlDataSource to populate the dropdownlist so do not wish to add code behind if it can be avoided.
<asp:DropDownList ID="ddl" runat="Server" DataSourceID="sqlDS" DataValueField="ID" DataTextField="TEXT" AppendDataBoundItems="true">
<asp:ListItem Text="" Value="" Selected="True" />
<asp:SqlDataSource ID="sqlDS" runat="Server" SelectCommand="spDS" SelectCommandType="StoredProcedure" />
Set Session("ID") as selected value on load?
The dropdown list is already populated from the sqldatasource. I just want to set the initial value on page load.