Commit WPF datagrid row when tab is pressed

Question

I am using WPF microsoft technology in my project. I have a datagrid that binds with a viewmodel property of datatype ICollectionViewLiveShaping. I want to commit datagrid row when tab is pressed and the row at the bottom for adding items will be automatically focused. This is automatically achieved when I pressed enter key. I have to do the same when tab is pressed.

I will be very thankful, if someone helps me on this.

Does it matter where the focus is at the time of pressing the tab key? I assume you'd still want to be able to move the focus from cell to cell? Or do you want to save the changes on every focus change? — Emond
You can use the "CellEditEnding" event to save your changes, it gets called when you tab from one cell to the other — Raviraj Palvankar
How about you simply 'fake' an enter click when tab is pressed by implementing an own KeyDown event which calls the default enter-KeyDownEvent, when the Key was tab? private void DataGrid_KeyDown(object sender, KeyEventArgs e) { if (e.Key == Key.Tab) { DataGrid_KeyDown(sender, new KeyEventArgs(e.KeyboardDevice, e.InputSource, e.Timestamp, Key.Return)); } } — Azzarrel

Yogesh Dixit Yogesh Dixit · Accepted Answer · 2018-12-13T10:25:27

If you wanna do it in MVVM pattern. then bound Keyboard keyhandler to viewmodel. and in case of TAB key use below code.

List<string> yourCollection = new List<string>(); // your view model collection
ICollectionView yourCollectionView = new CollectionViewSource { Source = yourCollection }.View;
ListCollectionView listCollectionView = (ListCollectionView)CollectionViewSource.GetDefaultView(yourCollectionView);
if (listCollectionView != null)
{
    if (listCollectionView.IsAddingNew)
    {
        listCollectionView.CommitNew();
    }
    if (listCollectionView.IsEditingItem)
    {
        listCollectionView.CommitEdit();
    }
}

if you want to do it in view itself then use below code.

this.ItemsGrid.CommitEdit(); 
this.ItemsGrid.CancelEdit();

Please vote in case this help you.

Commit WPF datagrid row when tab is pressed

1 Answers