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POHow to debug binding an XDocument to a WPF ListView
 

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  1. POHow to debug binding an XDocument to a WPF ListView
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    <p>I think I'm missing something fundamental in WPF data binding here:</p> <p>I have this XML file:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt; &lt;WindowList&gt; &lt;Window Height="10" Width="10" ALL_MODEL_MODEL="xyz0" ALL_MODEL_MANUFACTURER="leidi"/&gt; &lt;Window Height="20" Width="20" ALL_MODEL_MODEL="xyz1" ALL_MODEL_MANUFACTURER="goffin"/&gt; &lt;Window Height="30" Width="30" ALL_MODEL_MODEL="xyz2" ALL_MODEL_MANUFACTURER="schlueter"/&gt; &lt;Window Height="40" Width="40" ALL_MODEL_MODEL="xyz3" ALL_MODEL_MANUFACTURER="rossi"/&gt; &lt;/WindowList&gt; </code></pre> <p>And this XAML file:</p> <pre><code>&lt;Window x:Class="BindListToXDocument.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"&gt; &lt;StackPanel&gt; &lt;ListView Name="lstWindows"&gt; &lt;ListView.View&gt; &lt;GridView&gt; &lt;GridViewColumn Header="Height" DisplayMemberBinding="{Binding Path=Attribute[Height].Value}"/&gt; &lt;GridViewColumn Header="Width" DisplayMemberBinding="{Binding Path=Attribute[Width].Value}"/&gt; &lt;GridViewColumn Header="Model" DisplayMemberBinding="{Binding Path=Attribute[Model].Value}"/&gt; &lt;GridViewColumn Header="Manufacturer" DisplayMemberBinding="{Binding Path=Attribute[Manufacturer].Value}"/&gt; &lt;/GridView&gt; &lt;/ListView.View&gt; &lt;/ListView&gt; &lt;Button Click="Button_Click"&gt;Populate List&lt;/Button&gt; &lt;/StackPanel&gt; &lt;/Window&gt; </code></pre> <p>The binding expressions are modeled after this Document on msdn: <a href="http://msdn.microsoft.com/en-us/library/cc165615.aspx" rel="nofollow">How to: Bind to XDocument, XElement, or LINQ for XML Query Results</a>.</p> <p>I then use the following code to set the <code>DataContext</code>:</p> <pre><code>private void Button_Click(object sender, RoutedEventArgs e) { var doc = XDocument.Load("WindowList.xml"); var windows = doc.Root.Elements(); lstWindows.DataContext = windows; } </code></pre> <p>The code runs without any complaints, when I click the button, but the list items never show up. I can't figure out how to go about debugging this. Do you have any pointers for debugging binding expressions in general or how to bind the <code>XDocument</code> specifically?</p> <p><strong>EDIT:</strong> OK, it seems I was missing something crucial in my XAML:</p> <pre><code>&lt;ListView Name="lstWindows" ItemsSource="{Binding}"&gt; &lt;!-- specify the ItemsSource! --&gt; </code></pre> <p>I'll leave this question here, since it is a minimal example of binding to an <code>XDocument</code>, something I was having trouble finding - most examples already went a step further. I'm still interested in tips for debugging, though.</p>
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    1. COUse `output window` to look for possible binding errors
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      1. USHaris Hasan
    2. CO@Haris Hasan: Good point. The `output window` doesn't mention any binding errors, though...
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      1. USDaren Thomas
 

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