Question

I got a datagrid where a datasource #1 is bound to, e.g.

public class Class
{
  public string Val { get; set; }
  public string Val2 { get; set; }
}
List<Class> classes = new List<Class>();
dgr.DataSource = classes;

Inside this datagrid i got a listbox for each row with a datasource #2 bound to:

<Columns>
  <asp:TemplateColumn HeaderText="Spaltenname">
    <ItemTemplate>
      <asp:ListBox runat="server" DataTextField="Text" DataValueField="Value" DataSource="<%#oParentTablesHandler.DataTableXYZ%>" />
    </ItemTemplate>
  </asp:TemplateColumn>
</Columns>

This works, but I have problems setting the SelectedValue.

SelectedValue="<%# "" %>

will work but I need a selection depending on Val from datasource #1. How can I do that? I need to use Eval i guess, but

SelectedValue="<%# Eval("Val") %> did not work...

edit: I found out that I want to select an item by text and not by value, argh. Is there a way to do that?

Answer 1

Try like this..

<%# ((Class)Container.DataItem).Val %>

UPDATE:

well.there may be some value in ‘Val’ property that may not exist in your Datasource#2’s corresponding column…

So for test purpose try following..

<asp:ListBox .. AppendDataBoundItems="true"> 
   <Items>       
 <asp:ListItem Text="NA" Value="" />   
 </Items>
 </asp:ListBox >