How to Get the Underlying TreeView Item on Mouseover

[thomas kuang]

Please look the attach files.Thanks.

[Kiril Stanoev]

Hello Thomas,

You can use WPF's ToolTip class. The scenarios you can use the tooltip are many, so I've attached a sample project demonstrating one of the possible usages. Have a look at it and let me know if you need further assistance regarding this topic.

Sincerely yours,
Kiril Stanoev
the Telerik team

[thomas kuang]

thanks Kiril Stanoev ,
 but i have problem.you should look the attach files.you will understand.The tip information location not like tooltip tip information location. and the tip information will show when the treeview item header not all display,just display part.Do you understand? I'm sorry! my english is bad.I'm a  Chinese.

[Tina Stancheva]

Hi thomas kuang,

Thank you for the clarification. In order to display the tooltip only when the RadTreeViewItem is cropped you can implement the following:

if (parentTreeViewItem.DesiredSize.Width == parentTreeViewItem.ActualWidth)
{
    parentTreeViewItem.ToolTip = ((parentTreeViewItem.Header as StackPanel).Children[1] as TextBlock).Text;
}

We modified the project to implement this approach. Take a look at it and let me know if it works for you.

Sincerely yours,
Tina Stancheva
the Telerik team