删除当前单击的ListBox项目(ObservableCollcetion)

<ListBox ItemsSource="{Binding MyObservableCollection}" SelectedItem="{Binding SelectedItem}" />

private ObservableCollection<string> _myObservableCollection;
public ObservableCollection<string> MyObservableCollection
{
    get { return _myObservableCollection; }
    set { _myObservableCollection = value; OnPropertyChanged(); }
}

public MyViewModel()
{
    MyObservableCollection = new ObservableCollection<string>();
}

private string _selectedItem;
public string SelectedItem
{
    get { return _selectedItem; }
    set { _selectedItem = value; OnPropertyChanged(); }
}

public ICommand DeleteCommand { get; private set; }

public MyViewModel()
{
    // 初始化DeleteCommand
    DeleteCommand = new Command(DeleteItem);
}

private void DeleteItem()
{
    // 删除选中的项目
    MyObservableCollection.Remove(SelectedItem);
}

<ListBox ItemsSource="{Binding MyObservableCollection}" SelectedItem="{Binding SelectedItem}" ItemTappedCommand="{Binding DeleteCommand}" />