How to use LostFocus as a Command in WPF

Question

I am trying to use LostFocus event as Command in DataGridTextColumn and can't find an example on how to use it in WPF. Can anyone help me use it as I am new to WPF.

Thank you.

My xaml looks like:

   `

    The c# code:
          public partial class Myogg : UserControl    {
          MyLogg _viewModel;
         public MyLogg()
          {
              InitializeComponent();
              _viewModel = new MyLoggUCViewModel();
              DataContext = _viewModel;
          }
        }`

Does this answer your question? [Textbox Binding to both LostFocus and Property Update](https://stackoverflow.com/questions/15488033/textbox-binding-to-both-lostfocus-and-property-update) — BurnsBA, Jan 09 '20 at 01:43

score 2 · Accepted Answer · answered Mar 09 '15 at 12:42

2

you can use interaction triggers to do this ..

xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"

<i:Interaction.Triggers>
    <i:EventTrigger EventName="LostFocus">
        <i:InvokeCommandAction Command="{Binding Path=LostFocusCommand}"/>
    </i:EventTrigger>
</i:Interaction.Triggers>

answered Mar 09 '15 at 12:42

Muds

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Is still doesn't work. I created a propriety LostFocusCommand which it is never fired. – user2388887 Mar 09 '15 at 14:30
public ICommand LostFocusCommand { get { return _saveRowCommand ?? (_lostFocusCommand = new LostFocusCommand()); } } and the class LostFocusCommand looks like: public class SaveRowCommand:ICommand { public event EventHandler CanExecuteChanged; public bool CanExecute(object parameter) { return true; } public void Execute(object parameter) { MessageBox.Show("LostFocus") } } – user2388887 Mar 09 '15 at 15:47

How to use LostFocus as a Command in WPF

1 Answers1