Hi Marianne,

I am using the latest version of the Infragistics libraries, with the latest service release:  11.1.20111.2113.

I am writing an adapter for the XamTilesControl to be used with the Prism framework, and the code to add the tile is being executed inside an event handler that is called when a new view is added to the Prism region.  If you're not familiar with Prism, I think this event is probably being raised from within the "OnChanged" handler for an attached property, which is being set in the XAML for the view that I am trying to add to the tiles control.  Hope that makes sense. :/

If you create a simple WPF application and add a tile control to the main window, then add the code below in the code behind file, it will partially replicate the problem:

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            String testItem = "Item1";
            xamTilesControl1.Items.Add(testItem);
            Tile tile = xamTilesControl1.TileFromItem(testItem);
            if (tile != null)
            {
                // This is never reached!
                tile.State = TileState.Maximized;
            }
            else
            {
                // delay the maximizing of the tile until after tile is created
                xamTilesControl1.Dispatcher.BeginInvoke((Action)(() =>
                {
                    xamTilesControl1.UpdateLayout();
                    Tile lazyTile = xamTilesControl1.TileFromItem(testItem);
                    // if we have a tile now
                    if (lazyTile != null )
                    {
                        lazyTile.State = TileState.Maximized;
                    }
                })
                //, DispatcherPriority.ContextIdle
                );
            }
        }

The tile is always null when first added here, so the dispatcher is used to delay setting the state to Maximized.  This works for this simple scenario, but in my actual scenario it doesn't (I can get the tile, but setting the Maximized state does not actually cause the window to get maximized), however adding the DispatcherPriority.ContextIdle parameter (commented out in the code above) seems to fix my problem! :)

It looks like some kind of timing issue to me, so my concern is that my workaround may not be reliable, and it would be much better if I could obtain the tile as soon as I add the new view, and then set it's state to Maximized immediatly and have this actually maximize the tile when it's displayed. :)

Thanks.

Brian

Hi Brian,

Thank you for the update. Please let me know if I can be of further assistance.

I just noticed that the headers of my tiles are no longer displaying the header text.  Previously I had set the HeaderPath property of teh XamTilesControl to specify which property on my user control to bind to for this text, but this does not appear to work when you add Tile items directly. :(

I have had to modify my adapter class to set each Tile's Header explicitly, and to do that meant I had to use a cast to convert it's contained user control's DataContext to my view model type, which makes it more tightly coupled than I would like. :(

Is there a way to have the Tile bind it's Header to a property of it's Content object, possibly by specifying a HeaderPath as the XamTilesControl does?

Thanks,

Brian

Hi Brian,

The HeaderPathProperty is the xamTilesControls’ dependency property for setting the path to a value in the source that will be used to initialize the Header of each Tile and you can bind to it.  I’m guessing that you set the HeaderPath in code.

The tiles also have a HeaderProperty which is a dependency property.  You can also set each tile's header as I did in my snippet when I add a single tile.

I think the question is how are you setting / binding to this property? Or are you binding to this property?   You should be able to set the HeaderPath or Header of each tile.

Hi Marianne,

Thanks for the info, I hadn't realized that I could just bind to the Header property! :)  I have solved my problem with the code below:

// NB: This would be a reference to the actual user control
UserControl myControl = new UserControl();

// configure binding for header
Binding bind = new Binding("DisplayName");
bind.Source = myControl.DataContext;
bind.Mode = BindingMode.OneWay;

// add control to a new tile
Tile tile = new Tile() { Content = myControl };

// set binding for Header
tile.SetBinding(Tile.HeaderProperty, bind);

// add tile to tiles control
tilesControl.Items.Add(tile);

Thanks for your help.

Brian

Hi Brian,

Glad I could help and thanks for posting your solution code here for the next person. 

Please let me know if you have any further questions.