Question

I have the following XAML:

<ListView x:Name='debitOrderItems' ItemsSource='{Binding DebitOrderItems}'>   <ListView.ItemTemplate>     <DataTemplate>       <CheckBox x:Name='checkbox' Content='{Binding}' IsChecked='{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}, Path=IsSelected}' />     </DataTemplate>   </ListView.ItemTemplate> </ListView> 

Binding a list of items works fine and I get a beautiful listview with checkboxes, but I would like to have them all selected immediately. There is a SelectAll() method on the ListView, but when can I call it? DataContextChanged does not work as I link it before I populat the DebitOrderItems on it.

Answer 1

You can do this in the Loaded event:

public Window() {     InitializeComponent();     Loaded += delegate     {         _listView.SelectAll();     }; } 

That said, I’d question your design. Normally you would have a view model for each item in the list, and you would bind the IsChecked property to a property on that view model.