CollectionViewSource class can help here. As far as I can tell it has many capabilities to filter, sort and group collections. ICollectionView view = CollectionViewSource.GetDefaultView(ElementList); view.Filter = (o) => {return o;}//here is the lambda with your conditions to filter When you don’t need any filter just set view.Filter to null. Also check out this article … Read more
you can try this little helper function usage var scrollViewer = GetDescendantByType(yourListBox, typeof(ScrollViewer)) as ScrollViewer; helper function public static Visual GetDescendantByType(Visual element, Type type) { if (element == null) { return null; } if (element.GetType() == type) { return element; } Visual foundElement = null; if (element is FrameworkElement) { (element as FrameworkElement).ApplyTemplate(); } for … Read more
There are two main sub-problems one must solve in order to solve this problem: Determine which item is being hovered over Get the MouseHover event to fire when the user has hovered over one item, then moved the cursor within the listbox and hovered over another item. The first problem is rather simple to solve. … Read more
After spending mad hours hunting the wilds of Google, I figure I should share how I solved this problem since it seems to be a pretty d*mn simple thing to need and yet WPF makes it ridiculously frustrating until you intimately understand how animation is implemented. Once you do, you realize FrameworkElement.Unloaded is a useless … Read more
If you want to retrieve the display text of the item, use the GetItemText method: string text = listBox1.GetItemText(listBox1.SelectedItem);
Use a CollectionViewSource: <CollectionViewSource x:Key=”SortedItems” Source=”{Binding CollectionOfStrings}” xmlns:scm=”clr-namespace:System.ComponentModel;assembly=WindowsBase”> <CollectionViewSource.SortDescriptions> <scm:SortDescription PropertyName=”SomePropertyOnYourItems”/> </CollectionViewSource.SortDescriptions> </CollectionViewSource> <ListBox ItemsSource=”{Binding Source={StaticResource SortedItems}}”/> You might want to wrap your strings in a custom VM class so you can more easily apply sorting behavior.
You can extend the behavior of the ListBox by using attached properties. In your case I would define an attached property called ScrollOnNewItem that when set to true hooks into the INotifyCollectionChanged events of the list box items source and upon detecting a new item, scrolls the list box to it. Example: class ListBoxBehavior { … Read more
You need to set FocusVisualStyle of each ListBoxItem to null. Steps are bellow 1) Create ItemContainerStyle for the ListBox <Style x:Key=”ListBoxItemStyle1″ TargetType=”{x:Type ListBoxItem}”> <Setter Property=”FocusVisualStyle” Value=”{x:Null}”/> …. 2) Set that style to Listbox <ListBox ItemContainerStyle=”{DynamicResource ListBoxItemStyle1}”
Short answer: set the value of the exportselection attribute of all listbox widgets to False or zero. From a pythonware overview of the listbox widget: By default, the selection is exported to the X selection mechanism. If you have more than one listbox on the screen, this really messes things up for the poor user. … Read more
I find solution that instead of using ListBox I used ListView.It allows to change list items BackColor. private void listView1_Refresh() { for (int i = 0; i < listView1.Items.Count; i++) { listView1.Items[i].BackColor = Color.Red; for (int j = 0; j < existingStudents.Count; j++) { if (listView1.Items[i].ToString().Contains(existingStudents[j])) { listView1.Items[i].BackColor = Color.Green; } } } }