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    <p>If you have done it "correctly" the <code>PropertyChanged</code> event will cause an update of the bindings which bind to that property, when this occurs any converters that are used in <em>the same binding</em> will reconvert the values. So normally the conversions happen on their own. If this is not the case you are probably using the converters "inappropriately", please post some code because without it it's quite impossible to tell what exactly you are doing wrong.</p> <p><strong>Edit:</strong> You use <code>grid.SetValue(Grid.BackgroundProperty, bin)</code>, you should use <code>grid.SetBinding(Grid.BackgroundProperty, bin)</code> instead since it is a binding.</p> <p><strong>Edit2:</strong> This really has nothing to do with converters.<br/> In your sample code you bind to <code>IntValue</code>, then you change <code>TodayColor</code> and expect the binding to be updated, <strong>not gonna happen</strong>. If you want the binding to react to both properties you have to either use a <code>MultiBinding</code> or raise the respective events since your properties are interdependent.</p> <p>i.e.</p> <pre><code> private Color _TodayColor; public short _IntValue; public short IntValue { get { return _IntValue; } set { if (_IntValue != value) { _IntValue = value; OnPropertyChanged("IntValue"); OnPropertyChanged("TodayColor"); } } } public Color TodayColor { get { return _TodayColor; } set { if (_TodayColor != value) { _TodayColor = value; OnPropertyChanged("TodayColor"); OnPropertyChanged("IntValue"); } } } </code></pre>
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    1. COI post some information in original post
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    2. COYou should specify further what exactly does not update. I also added something to the answer that might be relevant.
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    3. COgrid.SetBinding(Grid.BackgroundProperty, bin) - no, it no help me :( >> You should specify further what exactly does not update. When I change color with color picker it raised changing event, but backgroud of my grid is not updating. Maybe I must set some DataContex for grid?
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