To obtain the SelectionChanged event on a DataGrid using ItemsControl within the MVVM pattern, you can follow these steps:
Here's an example XAML code snippet:
<DataGrid ItemsSource="{Binding MyItems}"
SelectedItem="{Binding SelectedItem}">
<i:Interaction.Triggers>
<i:EventTrigger EventName="PreviewMouseLeftButtonDown">
<i:InvokeCommandAction Command="{Binding SelectionChangedCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</DataGrid>
In the ViewModel, you can define the properties and command like this:
private ObservableCollection<MyItem> _myItems;
public ObservableCollection<MyItem> MyItems
{
get { return _myItems; }
set { _myItems = value; OnPropertyChanged(nameof(MyItems)); }
}
private MyItem _selectedItem;
public MyItem SelectedItem
{
get { return _selectedItem; }
set { _selectedItem = value; OnPropertyChanged(nameof(SelectedItem)); }
}
public ICommand SelectionChangedCommand => new RelayCommand(SelectionChangedHandler);
private void SelectionChangedHandler()
{
// Do something with the SelectedItem property
}
This approach allows you to handle the SelectionChanged event using the MVVM pattern and maintain separation of concerns between the view and the ViewModel.
Asked: 2023-06-20 05:48:17 +0000
Seen: 12 times
Last updated: Jun 20 '23