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POWPF XML Databind to ComboBox
 

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    <p>HI All,</p> <p>I am trying to bind some XML into a combobox using the below code:</p> <pre><code> &lt;UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Name="myComboBoxControl"&gt; &lt;UserControl.Resources&gt; &lt;DataTemplate x:Key="dataTemplateNode"&gt; &lt;Grid&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="Auto" MinWidth="20"/&gt; &lt;ColumnDefinition Width="*" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;TextBlock Text="{Binding XPath=@LCode}" Grid.Column="0" Margin="5,0,0,0" FontWeight="Bold"/&gt; &lt;TextBlock Text="{Binding XPath=.}" Grid.Column="1"/&gt; &lt;/Grid&gt; &lt;/DataTemplate&gt; &lt;XmlDataProvider x:Key="xmlNodeList" Source="/data/LocationCodes.xml" XPath="/LocationCodes/Location"/&gt; &lt;/UserControl.Resources&gt; &lt;ComboBox Name="LocationCombo" ItemsSource="{Binding Source={StaticResource xmlNodeList}}" ItemTemplate="{StaticResource dataTemplateNode}" SelectedValue="{Binding XPath=@LCode}" HorizontalContentAlignment="Stretch" Height="23" /&gt; &lt;/UserControl&gt; </code></pre> <p>The project builds fine and i can see the ComboBox populated as expected. however, when i try to get the selected value in the code-behind all i get is an empty/null string:</p> <pre><code>string compName = this.LocationCombo.SelectedValuePath.ToString(); MessageBox.Show(compName); </code></pre> <p>the xml file looks like below:</p> <pre><code>&lt;LocationCodes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"&gt; &lt;Location LCode="ABD1W"&gt;Aberdeen&lt;/Location&gt; &lt;Location LCode="ATH1W"&gt;Athens&lt;/Location&gt; &lt;/LocationCodes&gt; </code></pre>
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    1. COYou're not getting the `SelectedValue`, you're getting the `SelectedValuePath`. I don't know that this will work if you use `SelectedValue` - I've always ended up using `SelectedItem`, as karmicpuppet suggests - but `SelectedValuePath` isn't ever going to get you the selected value.
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      1. USRobert Rossney
 

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