WPF DG- How to delete selected row on Button click event from DataGrid

Question

I have the following problem.

I select a row from my DataGrid with mouse click like this: Admin admin=(Admin)dGrid.SelectedItem;

How can I remove this row with button click event? I couldn't use Rows.Delete and didn't find any delete,remove commands in WPF. Thanks for your help!

Answer 1

If you are binding your DataGrid to an observable collection (in two ways mode) then removing the selected item from the collection is all what you need to do; here is an example of how to proceed (DoubleClick To delete):

 <Grid>     
    <DataGrid ItemsSource="{Binding AdminCollection,Mode=TwoWay}" SelectedItem="{Binding SelectedAdmin}" MouseDoubleClick="DeleteRowEvent" >           
    </DataGrid>        
</Grid>

and the corresponding code behind:

 public partial class MainWindow : Window, INotifyPropertyChanged
{
    private Admin _selectedAdmin = new Admin();
    public Admin SelectedAdmin
    {
        get { return _selectedAdmin; }
        set
        {
            if (_selectedAdmin == value) return;
            _selectedAdmin = value;
            OnPropertyChanged();
        }
    }

    private ObservableCollection<Admin> _adminCollection = new ObservableCollection<Admin>();
    public ObservableCollection<Admin> AdminCollection
    {
        get { return _adminCollection; }
        set
        {
            if (_adminCollection == value) return;
            _adminCollection = value;
            OnPropertyChanged();
        }
    }
    public MainWindow()
    {
        InitializeComponent();
        AdminCollection = new ObservableCollection<Admin>()
    {
        new Admin()
        {
            Name = "James",Age = 34, Location = "Paris"
        },
         new Admin()
        {
            Name = "Joe",Age = 34, Location = "Us"
        },
         new Admin()
        {
            Name = "Ann",Age = 34, Location = "Canada"
        },
    };
    }

    public event PropertyChangedEventHandler PropertyChanged;

    [NotifyPropertyChangedInvocator]
    protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
    }

    private void DeleteRowEvent(object sender, MouseButtonEventArgs e)
    {
        AdminCollection.Remove(AdminCollection.First(x => x.Id == SelectedAdmin.Id));
    }
}
public class Admin
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string Location { get; set; }
    public int Age { get; set; }
}

the DataContext is set to the code behind in the MainWindow.xaml

DataContext="{Binding RelativeSource={RelativeSource Self}}"