Edit Question - KnowledgeHub

Title Body

I have implemented my own usercontrol based on listboxes. It has a dependency property with type of a collection. It works fine when I have only one instance of the usercontrol in a window, but if I have multiple instances I get problem that they share the collection dependency property. Below is a sample illustrating this. My user control called SimpleList: <UserControl x:Class="ItemsTest.SimpleList" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="_simpleList"> <StackPanel> <TextBlock Text="{Binding Path=Title, ElementName=_simpleList}" /> <ListBox ItemsSource="{Binding Path=Numbers, ElementName=_simpleList}"> <ListBox.ItemsPanel> <ItemsPanelTemplate> <StackPanel Orientation="Horizontal" /> </ItemsPanelTemplate> </ListBox.ItemsPanel> </ListBox> </StackPanel> </UserControl> Code behind: using System.Collections.Generic; using System.Windows; using System.Windows.Controls; namespace ItemsTest { public partial class SimpleList : UserControl { public SimpleList() { InitializeComponent(); } public string Title { get { return (string)GetValue(TitleProperty); } set { SetValue(TitleProperty, value); } } public static readonly DependencyProperty TitleProperty = DependencyProperty.Register("Title", typeof(string), typeof(SimpleList), new UIPropertyMetadata("")); public List<int> Numbers { get { return (List<int> )GetValue(NumbersProperty); } set { SetValue(NumbersProperty, value); } } public static readonly DependencyProperty NumbersProperty =

Tags (comma-separated) Cancel