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POUnwanted Selection Events In ListView
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2013-10-30T22:51:03.173
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How do I prevent a ListView selection change event from firing when I only want the bound data to change? To clarify, I have classes like this: <pre><code>public class MyCollectionViewModel : BindableBase { public ObservableCollection<MyItemViewModel> MyItems { get; set; } private MyItemViewModel _selectedItem; public MyItemViewModel SelectedItem { get { return _selectedItem; } set { this.SetProperty(ref _selectedItem, value); if (_selectedItem != null) { // Do something... } } } ... } public class MyItemViewModel : BindableBase { private bool _isSelected; public bool IsSelected { get { return _isSelected; } set { this.SetProperty(ref _isSelected, value); } } ... } </code></pre> With the following data template: <pre><code><DataTemplate x:Key="MyItemTemplate"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <CheckBox Margin="10" IsChecked="{Binding Path=IsSelected, Mode=TwoWay}" /> <Border Grid.Column="1"> ... </Border> </Grid> </DataTemplate> </code></pre> ... and used like this: <pre><code><ListView ItemsSource="{Binding Source={StaticResource SessionsViewSource}}" ItemTemplate="{StaticResource MyItemTemplate}" SelectedItem="{Binding Sessions.SelectedItem, Mode=TwoWay}" IsSwipeEnabled="False" /> </code></pre> To somewhat visualize the ListView: <blockquote> <pre><code> +--------------------- + [x] myItem1 +--------------------- + [ ] myItem2 +--------------------- </code></pre> </blockquote> The user can check and uncheck the checkboxes. Problem is, if there's an existing selection, when the <code>IsSelected</code> binding updates, the selection binding happens as well. Is there a simple way to fix this? I'd like to stick with MVVM as much as possible.
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<c#><listview><mvvm><winrt-xaml>
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Unwanted Selection Events In ListView
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