I created some textboxes and I want user to enter decimal values into them. In every application I have ever used, when I type something into the textbox and hit enter, the value is accepted and textbox lose focus. How can I do it in my app?
I know it should be relatively easy to do it with a key event, but maybe there is a command or something.
I searched the stackoverflow but I only found questions about how to keep focus after hitting enter...
解决方案
You can also create a generic behavior which can be easily applied to any textbox within your application. Here is a sample behavior class:-
public class TextBoxEnterKeyUpdateBehavior : Behavior
{
protected override void OnAttached()
{
if (this.AssociatedObject != null)
{
base.OnAttached();
this.AssociatedObject.KeyDown += AssociatedObject_KeyDown;
}
}
protected override void OnDetaching()
{
if (this.AssociatedObject != null)
{
this.AssociatedObject.KeyDown -= AssociatedObject_KeyDown;
base.OnDetaching();
}
}
private void AssociatedObject_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
TextBox textBox = sender as TextBox;
if (textBox != null)
{
if (e.Key == Key.Return)
{
if (e.Key == Key.Enter)
{
textBox.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}
}
}
}
}
To use this class in your xaml, just include it in textbox behaviors collection like this :-
Here "i" refers to System.Windows.Interactivity namespace.
