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PORefreshing a binding that uses a value converter
 

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    <p>I have a WPF UI that is bound to an object. I'm using a ValueConverter to convert a property to a specific image by a business rule:</p> <pre> <code> public class ProposalStateImageConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { var proposal = value as Proposal; var basePath = "pack://application:,,,/ePub.Content;component/Images/General/Flag_{0}.png"; string imagePath; if(proposal.Invoice != null) { imagePath = string.Format(basePath, "Good"); } else { imagePath = string.Format(basePath, "Warning"); } var uri = new Uri(imagePath); var src = uri.GetImageSource(); //Extention method return src; } } </code> </pre> <p>The element is a TreeView where the image is on the 2nd level:</p> <pre> <code> &lt;TreeView x:Name="tree" ItemsSource="{Binding People}" SelectedItemChanged="OnTreeItemChanged"&gt; &lt;TreeView.Resources&gt; &lt;HierarchicalDataTemplate DataType="{x:Type dmn:Person}" ItemsSource="{Binding Proposals}"&gt; &lt;StackPanel Orientation="Horizontal" ToolTip="{Binding Path=Fullname}" Margin="3"&gt; &lt;Image Margin="5,0,5,0" Width="16" Height="16" Source="pack://application:,,,/ePub.Content;component/Images/General/Person_Active.png" /&gt; &lt;TextBlock Text="{Binding Path=Firstname}" /&gt; &lt;TextBlock Text="{Binding Path=Lastname}" Margin="5,0,0,0" /&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; &lt;HierarchicalDataTemplate DataType="{x:Type dmn:Proposal}"&gt; &lt;StackPanel Orientation="Horizontal" Margin="3"&gt; <b>&lt;Image x:Name="invoiceImage" Width="16" Height="16" Margin="5,0,5,0" Source="{Binding, Converter={StaticResource ProposalStateImageConverter}, UpdateSourceTrigger=PropertyChanged}" /&gt;</b> &lt;TextBlock Text="{Binding DeliveryDate, Converter={StaticResource textCulturedDateConverter}}" /&gt; &lt;/StackPanel&gt; &lt;/HierarchicalDataTemplate&gt; &lt;/TreeView.Resources&gt; &lt;/TreeView&gt; </code> </pre> <p>It is working fine, but later, when the object's state changes, I want to refresh the image and make the value converter reevaluate. How is this possible?</p>
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    1. USHadi Eskandari
    1. USHadi Eskandari
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