<ListBox.ItemContainerStyle> <Style TargetType=”ListBoxItem”> <Setter Property=”IsSelected” Value=”{Binding Content.IsSelected, Mode=TwoWay, RelativeSource={RelativeSource Self}}”/> <Setter Property=”Template”> <Setter.Value> <ControlTemplate TargetType=”ListBoxItem”> <ContentPresenter/> </ControlTemplate> </Setter.Value> </Setter> </Style> </ListBox.ItemContainerStyle>
Finally! If found a way much more elegant and probably with better performance either. (see also Accessing an ItemsControl item as it is added) We “misuse” the property ItemsControl.AlternateIndex for this. Originally it is intended to handle every other row within a ListBox differently. (see http://msdn.microsoft.com/en-us/library/system.windows.controls.itemscontrol.alternationcount.aspx) 1. Set AlternatingCount to the amount of items contained … Read more
We use the following style to set a PreviewGotKeyboardFocus which handles all events of TextBox control and ComboBoxes and such: <ListView.ItemContainerStyle> <Style TargetType=”ListViewItem”> <EventSetter Event=”PreviewGotKeyboardFocus” Handler=”SelectCurrentItem”/> </Style> </ListView.ItemContainerStyle> And then we select the row in code behind: protected void SelectCurrentItem(object sender, KeyboardFocusChangedEventArgs e) { ListViewItem item = (ListViewItem) sender; item.IsSelected = true; }
I found something that worked better for my case in this StackOverflow question: Get row in datagrid By putting in UpdateLayout and a ScrollIntoView calls before calling ContainerFromItem or ContainerFromIndex, you cause that part of the DataGrid to be realized which makes it possible for it return a value for ContainerFromItem/ContainerFromIndex: dataGrid.UpdateLayout(); dataGrid.ScrollIntoView(dataGrid.Items[index]); var row … Read more
Methods It’s always better to loop through an array than a range – it’s much faster. It’s even faster to create a variant data field array with a one liner instead of redimensioning a predeclared array and fill it in an extra loop as proposed by Siddharth Rout (though a good method 🙂 Note: The … Read more
Approach 1 – ItemsControl Unless you need other aspects of the ListBox, you could use ItemsControl instead. It places items in the ItemsPanel and doesn’t have the concept of selection. <ItemsControl ItemsSource=”{Binding MyItems}” /> By default, ItemsControl doesn’t support virtualization of its child elements. If you have a lot of items, virtualization can reduce memory … Read more
You need FrameworkTemplate.FindName Method (String, FrameworkElement) for this purpose: private childItem FindVisualChild<childItem>(DependencyObject obj) where childItem : DependencyObject { for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++) { DependencyObject child = VisualTreeHelper.GetChild(obj, i); if (child != null && child is childItem) return (childItem)child; else { childItem childOfChild = FindVisualChild<childItem>(child); if (childOfChild != null) return childOfChild; } … Read more
Thanks for the answer by Grad van Horck. It guided me in the correct direction. To support text (not just background color), here is my fully working code: //global brushes with ordinary/selected colors private SolidBrush reportsForegroundBrushSelected = new SolidBrush(Color.White); private SolidBrush reportsForegroundBrush = new SolidBrush(Color.Black); private SolidBrush reportsBackgroundBrushSelected = new SolidBrush(Color.FromKnownColor(KnownColor.Highlight)); private SolidBrush reportsBackgroundBrush1 = … Read more
Yes, it is possible. This will do it. Say we have the enum public enum MyEnum { [Description(“MyEnum1 Description”)] MyEnum1, [Description(“MyEnum2 Description”)] MyEnum2, [Description(“MyEnum3 Description”)] MyEnum3 } Then we can use the ObjectDataProvider as xmlns:MyEnumerations=”clr-namespace:MyEnumerations” <ObjectDataProvider MethodName=”GetValues” ObjectType=”{x:Type sys:Enum}” x:Key=”MyEnumValues”> <ObjectDataProvider.MethodParameters> <x:Type TypeName=”MyEnumerations:MyEnum” /> </ObjectDataProvider.MethodParameters> </ObjectDataProvider> And for the ListBox we set the ItemsSource to … Read more
The answer you have referenced is exactly what is causing your problem, the ListBox (which is composed of among other things a ScrollViewer) inside your ScrollViewer catches the MouseWheel event and handles it, preventing it from bubbling and thus the ScrollViewer has no idea the event ever occurred. Use the following extremely simple ControlTemplate for … Read more