I'm working on a TreeView and i have some childs into it.
The problem is that when I select a child with a width superior than the TreeView, the scroll automaticaly moves to show all the selected item, i want to disable this behavior!
I've already tried to handle the RequestBringIntoView event but it doesnt seems to work!
Thanks for your help!
Here is the XAML:
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="350">
<Grid>
<TreeView RequestBringIntoView="TreeView_RequestBringIntoView">
<TreeViewItem Header="Monster huge tree view item Header OMG WTF IS THAT BBQ"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="Monster huge tree view item Header OMG WTF IS THAT BBQ">
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1">
<TreeViewItem Header="Monster huge tree view item Header OMG WTF IS THAT BBQ"/>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
</TreeViewItem>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
<TreeViewItem Header="TreeView Elem 1"/>
</TreeView>
</Grid>
</Window>
And the code-behing CS:
using System.Windows;
namespace WpfApplication2
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void TreeView_RequestBringIntoView(object sender, RequestBringIntoViewEventArgs e)
{
e.Handled = true;
}
}
}
You need to handle the RequestBringIntoView
event on the TreeViewItem
not the TreeView
.
You'll need to use an event setter to do this for databound items like below.
<TreeView>
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<EventSetter Event="RequestBringIntoView" Handler="Null_Handler"/>
</Style>
</TreeView.ItemContainerStyle>
</TreeView>
or like below for your xaml defined example
<TreeView>
<TreeViewItem Header="Monster huge tree view item Header OMG WTF IS THAT BBQ" RequestBringIntoView="Null_Handler"/>
<TreeViewItem Header="TreeView Elem 1" RequestBringIntoView="Null_Handler">
</TreeView>
Where Null_Handler
is defined as below
private void Null_Handler(object sender, RoutedEventArgs e)
{
e.Handled = true;
}