Category: Silverlight

ChildWindow Positioning

Silverlight ChildWindow is centered over the parent control. I have extended ChildWindow to open it at a specific position.

Positioned ChildWindow
Positioned ChildWindow

Here is a live demo : childwindow-positioning-demo

And here is the code :

public partial class ChildWindowEx : ChildWindow
{

    Point _pt = new Point(0,0);

    public ChildWindowEx()
    {
        InitializeComponent();
    }

    public ChildWindowEx(Point pt) : this()
    {
        _pt = pt;            
    }

    protected override Size ArrangeOverride(Size finalSize)
    {            
        Grid grid = Utils.FindChild(this, "ContentRoot");

        if (grid != null)
        {               
            grid.Arrange(new Rect(_pt.X, _pt.Y, grid.DesiredSize.Width, grid.DesiredSize.Height));
            return finalSize;
        }

        return base.ArrangeOverride(finalSize);
    }
}

Visual Studio 2010 Solution : download

Remove ListBoxItem Highlighting

A Silverlight/Wpf ListBoxItem is highlighted when selected or when the mouse hovers over it.

I need to display a list of items that are not highlighted when selected. This is a common scenario when displaying an inactive list for simply listing out some information.

ListBoxItem’s default template can be easily inspected and modified using Expression Blend – Select a ListBoxItem in Objects and Timeline pane, Right click and select Edit template > Edit a Copy. Name you template and save it at the scope of your choice.

This will create a copy of the template and allow you to modify it. Switch to the xaml view. Locate the VisualStates of MouseOver, Selected and Focused, and blank them out –

de-highlighted-xaml

The style is applied to the ListBoxItems using ItemContainerStyle –

applying-style-to-listboxitems

Here is the xaml style for the ListBoxItem –

After the style is applied, the ListBoxItems are not highlighted when selected or focused. Here is a live demo of a ListBox that does not highlight when items are selected : remove-listboxitem-hlighting-demo