public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
string header = txtRemove.Text; //name of Treeviewitem to delete
TreeView view = trvView; //get from location
RemoveAll(view.Items, p => string.Equals(p.Header, header));
}
public bool Remove(ItemCollection items, Predicate<TreeViewItem> isValid)
{
for (int i = items.Count - 1; i >= 0; i--)
{
TreeViewItem vItem = (TreeViewItem)items[i];
if (isValid(vItem))
{
items.RemoveAt(i);
return true;
}
else
{
bool isDeleted = Remove(vItem.Items, isValid);
if (isDeleted)
return isDeleted;
}
}
return false;
}
public void RemoveAll(ItemCollection items, Predicate<TreeViewItem> isValid)
{
for (int i = items.Count - 1; i >= 0; i--)
{
TreeViewItem vItem = (TreeViewItem)items[i];
if (isValid(vItem))
{
items.RemoveAt(i);
}
else
{
RemoveAll(vItem.Items, isValid);
}
}
}
}
///Xaml
<Window x:Class="TreeViewSample.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<TreeView x:Name="trvView" HorizontalAlignment="Left" Height="215" Margin="68,35,0,0" VerticalAlignment="Top" Width="221">
<TreeView.Items>
<TreeViewItem Header="1">
<TreeViewItem Header="1/1"/>
<TreeViewItem Header="1/2"/>
<TreeViewItem Header="1/3"/>
</TreeViewItem>
<TreeViewItem Header="2">
<TreeViewItem Header="2/1"/>
<TreeViewItem Header="2/2"/>
<TreeViewItem Header="2/3"/>
</TreeViewItem>
<TreeViewItem Header="3">
<TreeViewItem Header="3/1"/>
<TreeViewItem Header="3/2"/>
<TreeViewItem Header="3/3"/>
</TreeViewItem>
</TreeView.Items>
</TreeView>
<Button Content="Button" HorizontalAlignment="Left" Margin="333,155,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1"/>
<TextBox x:Name="txtRemove" HorizontalAlignment="Left" Height="23" Margin="333,102,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>
</Grid>
</Window>