WPF MVVM deselect textbox on Enter key press

Question

What I want is when for the currently focused textbox to lose focus when the user hits the enter key. The only way I can think to achieve this is by using input bindings in XAML to bind to a command in code that passes down the entire textbox control to the viewmodel. I don't like this approach and was hoping someone had a 'clean' way of approaching this problem.

score 4 · Accepted Answer · answered Oct 24 '14 at 16:05

4

You could create a custom textbox and put this in the controls code:

public partial class CustomTextBox : TextBox
{
    public CustomTextBox()
    {
        InitializeComponent();
    }

    protected override void OnKeyDown(KeyEventArgs e)
    {
        base.OnKeyDown(e);
        if(e.Key == Key.Return)
        Keyboard.ClearFocus();
    }
}

Then just use your custom textbox wherever you want that particular behaviour.

answered Oct 24 '14 at 16:05

emybob

1,303
15
22

That might actually be better than the way I was planning to do it. Thanks I'll mark it once I get a chance to play around with it. – Thermonuclear Oct 24 '14 at 16:07
something to note is the KeyBoard.ClearFocus is for .Net 4.0 so if your using something older then check this thread: http://stackoverflow.com/questions/2914495/wpf-how-to-programmatically-remove-focus-from-a-textbox – emybob Oct 24 '14 at 16:15

score 2 · Answer 2 · answered Feb 23 '15 at 14:44

Quite often you get a password box on login whereby you need to allow the enter key.

<PasswordBox VerticalAlignment="Center" x:Name="txtPassword" Template="{StaticResource PassBoxBaseControlTemplate}" Height="25" BorderBrush="Black" Width="165.031">
   <PasswordBox.InputBindings>
        <KeyBinding Key="Enter" Command="{Binding ComLoginClickOK}" CommandParameter="{Binding ElementName=txtPassword}"/>
   </PasswordBox.InputBindings>
</PasswordBox>

WPF MVVM deselect textbox on Enter key press

2 Answers2