I am writing my custom WPF ItemsControl to display a list of item. The items are shown embedded inside a ScrollViewer:
<Style TargetType="MyCustomItemsControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="MyCustomItemsControl">
<ScrollViewer x:Name="PART_MyScrollViewer" >
<ItemsPresenter/>
</ScrollViewer>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I want to make sure that when I move the mouse into the control, a particular item (marked as selected) will be scrolled into the mouse position. In my OnMouseEnter method I am able to find the item but I don't know what to do next. Does anyone have any idea?
protected override void OnMouseEnter(MouseEventArgs e)
{
for (int i = 0; i < Items.Count; i++)
{
ContentPresenter uiElement = (ContentPresenter)ItemContainerGenerator.ContainerFromIndex(i);
var item = uiElement.Content as MyCustomObject;
if (item.IsSelected)
{
// How to scroll the uiElement to the mouse position?
break;
}
}
}
// How to scroll the uiElement to the mouse position?
uiElement.BringIntoView();
REF: https://msdn.microsoft.com/en-us/library/ms598110.aspx
UPDATE: (thanks to @jmbpiano) Note, it does not bring the control exactly to the current mouse cursor position. It just brings the control to a visible position, where the Operator will be able to click it with the mouse (which in 99% of cases is all someone who finds this question is likely to need).