Custom Control in Silverlight ListBox

Question

I have a custom control I created from a expression design I created and exported to xaml. I have put in it a bound itemtemplate/datatemplate of a ListBox contorl. It doesn't seem to be rendering more than once and/or it is rendering each item in the same place(kind of like the same x,y coordinates.

It would seem to me that this should be a simple process. If I fill the datatemplate with a textblock it would generate a couple textblocks in a vertical list. I would expect if I swap out the textblock with my custom control I should get a couple custom controls in a vertical list.

Wouldn't this be teh expected behavior or is there a reason the listbox only appears to be rendering a single usercontrol? In both cases I use the same data for the listbox.

<telerik:ListBox x:Name="PeopleList"  Grid.Row="1" >
        <telerik:ListBox.ItemTemplate>
            <DataTemplate>
                <Grid>

                    <custom:ExecSelector Height="100" Width="100"  x:Name="ExecSelector" FullName="{Binding City}"></custom:ExecSelector>                

                </Grid>    

            </DataTemplate>
        </telerik:ListBox.ItemTemplate>
    </telerik:ListBox>


 People = new List<PersonViewModel>();
        PersonViewModel person2 = new PersonViewModel()
        {
            Name = "Austin Weise",
            City = "Texas",
            Email = "[email protected]",
            Position = "Techincal Director",
            Bio = "Programmer"
        };
        PersonViewModel person = new PersonViewModel()
        {
            Name = "Ian House",
            City = "Vancouver",
            Email = "[email protected]",
            Position = "Creative Director",
            Bio = "Designer"
        };

        People.Add(person2);            
        People.Add(person);

        PeopleList.DataContext = this;
        PeopleList.ItemsSource = People;

That should provide enough to visualize it unless the UI elements are required for the custom control.

slugster slugster · Accepted Answer · 2010-06-07T21:39:11

Based on your current description of your problem:

make sure you have not put any values on the Top and Left properties of the outer control.
make sure you have more than one data item in the list you are binding to
make sure your ListBox has sufficient height to be able to show more than one item
make sure you haven't disabled the ListBox scroll bar.

That's all the guesses that i can throw out there unless you have more details.

Custom Control in Silverlight ListBox

1 Answers