Binding textbox in wpf

Question

I have implemented the binding using the answer posted here: WPF Binding to local variable and this: https://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged.aspx

It looks like this:

public partial class AddCard: DXWindow, INotifyPropertyChanged
{
   public event PropertyChangedEventHandler PropertyChanged;
   private int _CardNumber;

   public int CardNumber
   { 
       get { return _CardNumber; }
       set
       {
           if (value != _CardNumber)
           {
              _CardNumber = value;
              OnPropertyChanged("CardNumber");
           }
       }
   }

   private void OnPropertyChanged(string p)
   {
       if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(p));
   }
}

in xaml (I'm using DevExpress components):

    <dx:DXWindow
        DataContext="{Binding RelativeSource={RelativeSource Self}}"
    .../>

<dxe:TextEdit Text="{Binding Path=CardNumber}"/>

The problem: When updating the CardNumber value in code - it updates the text box on the window, BUT updating the textbox in the window - doesn't update the property of CardNumber in code.

What am I missing?

Mark Feldman · Accepted Answer · 2016-04-03 12:57:32Z

2

By default updates only propagate through when the control loses focus. I suspect you want them to update immediately, in which case add 'UpdateSourceTrigger=PropertyChanged' to your binding.

answered Apr 3, 2016 at 12:57

Mark Feldman

16.2k4 gold badges34 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Binding textbox in wpf

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related