WPF TextBlock text Binding

Question

the TextBlock binding does not work and I cant figure why...

(This Code Works but the TextBlock does not get Updated )

XAML

<TextBlock x:Name="filterAllText"
 Text="{Binding UpdateSourceTrigger=PropertyChanged}" />

Codebehind

filterAllText.DataContext = LogSession.test.MyCoynt;

C#

public class Test : INotifyPropertyChanged {
 public int myCoynt;

     public int MyCoynt {
        get { return myCoynt; }
        set {
            myCoynt = value;
            NotifyPropertyChanged();
        }
    }

     public event PropertyChangedEventHandler PropertyChanged;

     protected virtual void NotifyPropertyChanged(
        [CallerMemberName] String propertyName = "") {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null) {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
}

The `Binding` needs a `Path`, i.e `{Binding MyCoynt, UpdateSourceTrigger=PropertyChanged}"` — default, Jan 31 '13 at 11:16

score 10 · Accepted Answer · edited Jan 31 '13 at 14:35

10

Try this:

<TextBlock x:Name="filterAllText" 
    Text="{Binding UpdateSourceTrigger=PropertyChanged, Path=MyCoynt}" />

And set your DataContext like:

filterAllText.DataContext = LogSession.test;

edited Jan 31 '13 at 14:35

Kapitán Mlíko

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answered Jan 31 '13 at 11:20

Goanne

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score 0 · Answer 2 · edited Jan 31 '13 at 14:33

0

<TextBlock x:Name="filterAllText" Text="{Binding Path=., UpdateSourceTrigger=PropertyChanged}" />

this should work but its not the usual way

EDIT: the better way is the anwser from Goanne

edited Jan 31 '13 at 14:33

Kapitán Mlíko

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60

answered Jan 31 '13 at 11:20

blindmeis

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http://stackoverflow.com/questions/1066262/special-symbols-in-wpf-binding-what-does-binding-path-mean – blindmeis Jan 31 '13 at 11:22
oh, I didn't see that he set the `DataContext` to the actual property. Cool trick :) – default Jan 31 '13 at 11:40

WPF TextBlock text Binding

2 Answers2

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