I have a UserControl named StatusIndicator, with a Dependecy Property on
it, which has a PropertyChangedCallback I need, when the property
changes to change Visual State.
I have a GameState class with a
CurrentName property, which is bound to my UserControl's dependecy
property. It implements INotifyPropertyChange as well, and contains
these lines:
private static State current = State.Free;
public State Current {
get { return current; }
set {
current = value;
CurrentName = current.ToString("G");
}
}
private static string currentName = State.Free.ToString("G");
public string CurrentName {
get { return currentName; }
set {
currentName = value;
OnPropertyChanged("CurrentName");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName) {
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) {
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
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Unfortunatelly
PropertyChanged is
always null, and I am unable to use my callback. The statically
initialized currentName value is set correctly, but later changes does
not affect the view.
I use StatusIndicator in the MainWindow.xaml:
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:BattleHack.Managers"
xmlns:ctrl="clr-namespace:BattleHack.Controls"
xmlns:entity="clr-namespace:BattleHack.Entities"
Title="BattleHack" Height="700" Width="500">
answer this question
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Shoaib ANwarPosted Oct 28, 2015, 3:31 AM
Shoaib ANwarPosted Oct 28, 2015, 3:31 AM
Csaba CzinePosted Aug 29, 2010, 8:29 AM
public class GameState : INotifyPropertyChanged {
public GameState() {
if (instance == null)
instance = this;
}
private static GameState instance;
public static GameState Instance {
get {
if (instace == null)
new GameState();
return instance;
}
}
...
}