Introduce support for specifying the speed of the auto-scrolling functionality (when the IsAutoScrollingEnabled property is set to True).

When the IsSelectionEnabled and IsSynchronizedWithCurrentItem properties are set to True, an InvalidOperationException is thrown.

The UnselectAll method, which comes from MultiSelector, does not unselect all items when manually select them one by one. The method will unselect the items in the order they were selected, one by one.

Hi guys,

I am investigating a weird scrolling behavior in our app, I have more or less reproduced it in the attached sample app. I say 'more or less' because the little sample doesn't exactly have the same structure as our app but the result looks to be the same as what is happening in our software.

When declaring an unnamed style that targets the RadTileViewItem, scrolling the minimized TileViewItems while have one in the Maximized state, reverts all the minimized ones to their 'Normal' state as well as the one that was maximized. If the RadTileViewItem style is given a Key in the resource dictionary and used explicitly in the TileView's ItemContainerStyle property the scrolling works fine.

Both ways of using the style should, in my opinion, behave exactly the same.

Please take a look.

Thanks.

 

Reproduced with Implicit Styles with NoXAML binaries only. The workaround is to set a fixed value for the RestoredHeight property of RadTileViewItem

You can work this around by setting the PreservePositionWhenMaximized to False and implement custom preserving logic. You can see this approach in the attached project.

private bool isManualPositionChanged = false;
private Dictionary<RadTileViewItem, int> maximizedItemPositionCache = new Dictionary<RadTileViewItem, int>();

public MainWindow()
{
	InitializeComponent();
	this.xTileView.PreviewTileStateChanged += XTileView_PreviewTileStateChanged;
}

private void XTileView_PreviewTileStateChanged(object sender, Telerik.Windows.Controls.PreviewTileStateChangedEventArgs e)
{
	if (this.isManualPositionChanged)
            {
                return;
            }

            RadTileViewItem tileViewItem = (RadTileViewItem)e.OriginalSource;
            var header = tileViewItem.Header;
            TileViewItemState oldState = e.TileState;
            TileViewItemState newState = tileViewItem.TileState;

            if (newState == TileViewItemState.Minimized || newState == TileViewItemState.Restored)
            {
                if (maximizedItemPositionCache.ContainsKey(tileViewItem))
                {
                    this.isManualPositionChanged = true;
                    tileViewItem.Position = maximizedItemPositionCache[tileViewItem];
                    this.isManualPositionChanged = false;
                    maximizedItemPositionCache.Remove(tileViewItem);
                }
                if (newState == TileViewItemState.Restored)
                {
                    this.isManualPositionChanged = true;
                    var tileView = sender as RadTileView;
                    foreach (RadTileViewItem item in tileView.Items)
                    {
                        if (item.TileState == TileViewItemState.Maximized)
                        {
                            item.TileState = TileViewItemState.Restored;
                        }
                    }
                    this.isManualPositionChanged = false;
                }
            }
            else if (newState == TileViewItemState.Maximized)
            {
                if (!maximizedItemPositionCache.ContainsKey(tileViewItem))
                {
                    maximizedItemPositionCache[tileViewItem] = tileViewItem.Position;
                }
            }
}

The values are switched. 

NewState holds the value of OldState. 
OldState holds the value of NewState 

Workaround:
Create a custom style which target type is set to TileViewItemHeader and set it to the HeaderStyle property of the TileView. Then in the custom style, set a custom DataTemplate to the HeaderTemplate property. In this template specify a TextBlock and set its Margin property for instance.

Available in R3 2017 Official Release Version.

When you add RadBook as a content of RadTileViewItem and reorder the TileViewItem you get ArgumentOutOfRangeException.

Workaround: You can set the width of the RadBook.

When animating from one state to another the content Fills the entire area( before the items was not stretched and it took the space it required).


Available in LIB version: 2015.3.1026 

In application with heavier styles and a slower machine when items are dragged and swiped it sometimes leads to exception:
Cannot animate the 'VerticalOffset' property on a 'Telerik.Windows.Controls.TileViewPanel' using a 'System.Windows.Media.Animation.DoubleAnimationUsingKeyFrames'

With our Q3 2014 SP1 release an exception is thrown when you try to maximize an Item. 

Available in LIB version: 2015.1.1208

The RadTileView throws an exception if you initially have a maximized and selected items in databound scenario. 

Fixed in LIB version: 2014.2.1006

An item disappears if you have PreservePositionWhenMaximized=true and Virtualization=true and you maximize/minimize different items a couple of times.

Then the FlowDirection is set to RightToLeft and you start dragging an RadTileViewItem it looks flipped.

If a RadTileViewItem hosts several controls (e.g. Buttons, RadioButtons) users should be able to change the focused element using arrow keys.

TileViewItems' opacity is lost after drag and drop - if you set an opacity different than 1.0 in XAML it will be overridden after a DnD operation with this item.