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Alex Rivera
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I got a WPF application that shows a button bound to a command like that: <Button Command="{Binding Path=TestrunStartCommand}" Content="GO!"> The command is defined like that: public ICommand TestrunStartCommand { get { return new RelayCommand(TestrunStartExecute, () => !IsTestrunInProgress); } } public bool IsTestrunInProgress { get{ return _isTestrunInProgress; } set{ _isTestrunInProgress = value; RaisePropertyChanged(IsTestrunInProgressPropertyName); } } The problem is, the button won't be enabled immediately after I set IsTestrunInProgress to false, but only after I click inside the application window . Could you help me understand this behaviour and show me how to fix this? Further reading: wpf command pattern - when does it query canexecute
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