WPF

'finds the actual grid used by the list box
Dim d As DependencyObject
d = VisualTreeHelper.GetParent( _
        lstItems.ItemContainerGenerator.ContainerFromIndex(0))
While Not (d Is Nothing OrElse d.GetType() Is GetType(Grid))
    d = VisualTreeHelper.GetParent(d)
End While
If d Is Nothing Then Exit Sub

'once you have the grid, you need to add the rows and columns
Dim rd As RowDefinition
Dim cd As ColumnDefinition
Dim grd As Grid = CType(d, Grid)
lstItems.SetValue(Grid.IsSharedSizeScopeProperty, True)
For i As Integer = 0 To 63
    rd = New RowDefinition
    rd.Height = New GridLength(1, GridUnitType.Star)
    grd.RowDefinitions.Add(rd)
    cd = New ColumnDefinition
    cd.Width = New GridLength(1, GridUnitType.Star)
    grd.ColumnDefinitions.Add(cd)
Next
'this is just for debugging purposes
grd.ShowGridLines = True

<!-- moved the data binding for AvailableObjects to here -->
<ListBox Name="lstItems" Background="Green" ItemsSource="{Binding Path=AvailableObjects}>
        <ListBox.ItemsPanel>
            <!-- what you have here is right -->
        </ListBox.ItemsPanel>
        <ListBox.ItemContainerStyle>
            <!-- what you have here is right -->
        </ListBox.ItemContainerStyle>
        
        <!-- this is wrong, you are adding an items control to the list box
             as its only item, you need to do set ItemsSource instead -->
        <ItemsControl FontWeight="Normal" ItemsSource="{Binding Path=AvailableObjects}">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <Button
                            Grid.Row="{Binding Path=YLoc}"
                            Grid.Column="{Binding Path=XLoc}"
                            Content="{Binding Path=ObjectText}"
                            Margin="2,3.5"
                        />
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>
    </ListBox>

for (int strip = 0; strip < _stripsPerPanel; strip++)
{
    rd = new RowDefinition();
    rd.Height = new GridLength(1, GridUnitType.Star);
    rd.SharedSizeGroup = "RowGroup";
    grd.RowDefinitions.Add(rd);
}

for (int part = 0; part < _partsPerStrip; part++)
{
    cd = new ColumnDefinition();
    cd.Width = new GridLength(1, GridUnitType.Star);
    cd.SharedSizeGroup = "ColumnGroup";
    grd.ColumnDefinitions.Add(cd);
}

AR Reddy wrote:

If I specify an intranet silverlight application its not working.

Mark Salsbery
Microsoft MVP - Visual C++

System.Windows.Controls.ItemsControl
    System.Windows.Controls.Primitives.Selector
        System.Windows.Controls.ListBox

Mark Salsbery
Microsoft MVP - Visual C++