Hi Raymond,

Is what you're wantting to do   just like

bind the SelectList with datasource in Page_Load and then set the initial
selectedIndex to a certain item according to a given value?  (Please feel
free to let me know if I misunderstand).

If so, I think we can make use of the  SelectedIndex property  of the
SelectList control, this property is used to speicfy the current
selectedItem's index.  Then, another problem is how to get the correct
Index of the Item we want to set as current selectedItem according to a
given value.  This can be done through the SelectList control's "Items"
collection, the Items property is a MobileListItemCollection which support
the following method:

MobileListItemCollection.IndexOf(  MobileListItem  item );

which find the certain ListItem's index in the collection according to the
provided ListItem instance. In our scenario, we can construct a
MobileListItem through the given value and search in the colleciton. For
example:

private void Bind_List()
{
    string[] items = {"aaa","bbb","ccc","ddd","eee","fff","ggg"};

    lstName.DataSource = items;

    lstName.DataBind();

    string val = "eee";
    int index = lstName.Items.IndexOf( new MobileListItem(val,val));

    lstName.SelectedIndex = index;
}

the above code bind a SelectList with some datas and then specify the
initial selected value as "eee" (not the default first one).

Hope helps.  Thanks,

Steven Cheng
Microsoft Online Support