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POBinding SelectedValue of ComboBox to enum in WPF
 

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    <p>I want to show list of products in <code>ListView</code> where one of the columns is a <code>ComboBox</code> that I want to bind. This is my enum:</p> <pre><code>public enum SelectionMode { One, Two } </code></pre> <p>And Product class:</p> <pre><code>public class Product { public SelectionMode Mode { get; set; } public string Name { get; set; } } </code></pre> <p>In <code>ViewModel</code> class I have an <code>ObservableCollection</code> of <code>Product</code>'s:</p> <pre><code> private ObservableCollection&lt;Product&gt; _productList; public ObservableCollection&lt;Product&gt; ProductList { get { return _productList; } set { _productList = value; } } public MainViewModel() { ProductList = new ObservableCollection&lt;Product&gt; { new Product {Mode = SelectionMode.One, Name = "One"}, new Product {Mode = SelectionMode.One, Name = "One"}, new Product {Mode = SelectionMode.Two, Name = "Two"} }; } </code></pre> <p>And finally I have a <code>Grid</code> with a <code>ListView</code> that binds to my <code>ProductList</code>:</p> <pre><code>&lt;Window.Resources&gt; &lt;ObjectDataProvider x:Key="AlignmentValues" MethodName="GetNames" ObjectType="{x:Type System:Enum}"&gt; &lt;ObjectDataProvider.MethodParameters&gt; &lt;x:Type TypeName="ViewModel:SelectionMode" /&gt; &lt;/ObjectDataProvider.MethodParameters&gt; &lt;/ObjectDataProvider&gt; &lt;/Window.Resources&gt; &lt;Grid&gt; &lt;ListView Height="120" HorizontalAlignment="Left" VerticalAlignment="Top" SelectionMode="Multiple" ItemsSource="{Binding ProductList}" &gt; &lt;ListView.View&gt; &lt;GridView&gt; &lt;GridViewColumn Width="120" Header="Product Name" DisplayMemberBinding="{Binding Path=Name}" /&gt; &lt;GridViewColumn Header="Selection Mode"&gt; &lt;GridViewColumn.CellTemplate&gt; &lt;DataTemplate&gt; &lt;ComboBox ItemsSource="{Binding Source={StaticResource AlignmentValues}}"/&gt; &lt;/DataTemplate&gt; &lt;/GridViewColumn.CellTemplate&gt; &lt;/GridViewColumn&gt; &lt;/GridView&gt; &lt;/ListView.View&gt; &lt;/ListView&gt; &lt;/Grid&gt; </code></pre> <p>My question is; what is the way to bind <code>SelectedValue</code> of <code>ComboBox</code> to <code>SelectionMode</code> property of my <code>Product</code> class?</p> <p><strong>Update</strong></p> <p>Well. I found an answer in <a href="http://geekswithblogs.net/cskardon/archive/2008/10/16/databinding-an-enum-in-wpf.aspx" rel="nofollow">this topic</a>. So I have to add converter class:</p> <pre><code>public class MyEnumToStringConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { return value.ToString(); } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { return (SelectionMode)Enum.Parse(typeof(SelectionMode), value.ToString(), true); } } </code></pre> <p>And add it to window resources:</p> <pre><code>&lt;Window.Resources&gt; &lt;ObjectDataProvider x:Key="AlignmentValues" MethodName="GetNames" ObjectType="{x:Type System:Enum}"&gt; &lt;ObjectDataProvider.MethodParameters&gt; &lt;x:Type TypeName="ViewModel:SelectionMode" /&gt; &lt;/ObjectDataProvider.MethodParameters&gt; &lt;/ObjectDataProvider&gt; &lt;Converters:MyEnumToStringConverter x:Key="MyEnumConverter"/&gt; &lt;/Window.Resources&gt; </code></pre> <p>And finally edit <code>ComboBox</code> data template:</p> <pre><code>&lt;ComboBox ItemsSource="{Binding Source={StaticResource AlignmentValues}}" SelectedValue="{Binding Path=Mode, Converter={StaticResource MyEnumConverter}}"/&gt; </code></pre> <p>That's all. Hope it will be useful for someone else :)</p>
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