First off, you need to implement INotifyPropertyChanged interface in your view model and raise the PropertyChanged event in the setter of the Rule property. Otherwise no control that binds to the SelectedRule property will “know” when it has been changed. Then, your XAML <TextBlock Text=”{Binding Path=SelectedRule.Name}” /> is perfectly valid if this TextBlock is outside … Read more
Ok, try this in your button declaration: <Button x:Name=”sideButton” Width=”20″> <Button.Style> <Style TargetType=”{x:Type Button}”> <Setter Property=”Visibility” Value=”Hidden” /> <Style.Triggers> <DataTrigger Binding=”{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type ListBoxItem}},Path=IsMouseOver}” Value=”True”> <Setter Property=”Visibility” Value=”Visible” /> </DataTrigger> </Style.Triggers> </Style> </Button.Style> </Button> So I’m using a style with a trigger to look back up the visual tree until I find a ListBoxItem, and … Read more
The binding problem comes from the default style for ListBoxItem. By default when applying styles to elements WPF looks for the default styles and applies each property that is not specifically set in the custom style from the default style. Refer to this great blog post By Ian Griffiths for more details on this behavior. … Read more
This is because of the padding inside the default ItemContainerStyle for ListBoxItem. To remove this you can override the ItemContainerStyle. For example just try the below Empty ItemContainerStyle to your ListBox and you can see the margin is no more. <ListBox > <ListBox.ItemsPanel> <ItemsPanelTemplate > <VirtualizingStackPanel IsItemsHost=”True” Orientation=”Horizontal”/> </ItemsPanelTemplate> </ListBox.ItemsPanel> <ListBox.ItemContainerStyle> <Style TargetType=”{x:Type ListBoxItem}”> <Setter … Read more
public void MoveUp() { MoveItem(-1); } public void MoveDown() { MoveItem(1); } public void MoveItem(int direction) { // Checking selected item if (listBox1.SelectedItem == null || listBox1.SelectedIndex < 0) return; // No selected item – nothing to do // Calculate new index using move direction int newIndex = listBox1.SelectedIndex + direction; // Checking bounds of … 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; } } } }
I believe that your MouseLeftButtonDown handler is not called because the ListBox uses this event internally to fire its SelectionChanged event (with the thought being that in the vast majority of cases, SelectionChanged is all you need). That said, you have a couple of options. First, you could subscribe to the PreviewLeftButtonDown event instead. Most … Read more
It’s a couple lines of code. If you didn’t want it in code-behind, I sure it could be packaged in a attached behaviour. private void Button_Click(object sender, RoutedEventArgs e) { MainListBox.SelectedItem = MainListBox.Items[3]; MainListBox.UpdateLayout(); // Pre-generates item containers var listBoxItem = (ListBoxItem) MainListBox .ItemContainerGenerator .ContainerFromItem(MainListBox.SelectedItem); listBoxItem.Focus(); }
<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>
You can use the IsSharedSizeScope attached property. In your template definition, attach a “shared size group” to each column, like this: <Grid.ColumnDefinitions> <ColumnDefinition SharedSizeGroup=”col1″ /> <ColumnDefinition SharedSizeGroup=”col2″ /> </Grid.ColumnDefinitions> … then define your ListBox as a shared size scope so it knows to size each “size group” the same way: <ListBox Grid.IsSharedSizeScope=”True”>…</ListBox>