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POHow can you bind an attached property to DisplayMemberPath of a ComboBox?
 

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  1. POHow can you bind an attached property to DisplayMemberPath of a ComboBox?
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    <p>I can't seem to find the correct syntax to allow an attached property to be used as the DisplayMemberPath of a ComboBox.</p> <p>The property is SelectorSwitchedControl.NameForSelector<br> It's in the namespace 'LocalTest' which is mapped to the XAML prefix 'local'. </p> <p>Here's the code...</p> <pre><code>&lt;UserControl x:Class="Playground.SelectorSwitchedControlTest.SelectorSwitchedControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:glc="clr-namespace:Playground.CommonControls" xmlns:local="clr-namespace:Playground.SelectorSwitchedControlTest" Background="Transparent"&gt; &lt;Border x:Name="MainBorder" BorderBrush="Gray" BorderThickness="1"&gt; &lt;DockPanel&gt; &lt;glc:FixedToolBar DockPanel.Dock="Top"&gt; &lt;ComboBox x:Name="MainSelector" ItemsSource="{Binding Children, ElementName=MainPanel}" DisplayMemberPath="(local:SelectorSwitchedControl.NameForSelector)" /&gt; &lt;/glc:FixedToolBar&gt; &lt;local:SelectorSwitchedControlPanel x:Name="MainPanel" /&gt; &lt;/DockPanel&gt; &lt;/Border&gt; &lt;/UserControl&gt; </code></pre> <p>...which for some reason gives me the exception 'Prefix 'local' does not map to a namespace.' which I'm not sure why it's saying that as if I remove the 'DisplayMemberPath' line, the '' tag renders just like it's supposed to proving the namespace is mapped.</p> <p>I've also tried all of the following...</p> <ul> <li>DisplayMemberPath="local:SelectorSwitchedControl.NameForSelector"</li> <li>DisplayMemberPath="(local:SelectorSwitchedControl.NameForSelector)"</li> <li>DisplayMemberPath="SelectorSwitchedControl.NameForSelector"</li> <li>DisplayMemberPath="(SelectorSwitchedControl.NameForSelector)"</li> <li>DisplayMemberPath="LocalTest.SelectorSwitchedControl.NameForSelector"</li> <li>DisplayMemberPath="(LocalTest.SelectorSwitchedControl.NameForSelector)"</li> </ul> <p>I know it's just one of those days where my mind isn't working and I'm missing something simple, but it's driving me crazy! So what's the proper syntax?</p>
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    1. USMarqueIV
    1. USMarqueIV
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      1. POHow can you bind an attached property to DisplayMemberPath of a ComboBox?
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      1. VTUpMod
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    1. COI don't see the word `{Binding}` anywhere in your code.
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      1. USFederico Berasategui
    2. COThis is a strange one... personally, I would have gone for `DisplayMemberPath="(local:SelectorSwitchedControl.NameForSelector)"`. However, after a quick search, I couldn't find anything useful on `Binding` and `DisplayMemberPath`. I checked MSDN and can confirm that the `DisplayMemberPath` property *is* a `DependencyProperty` that uses the `BindableAttribute` set to `true`.
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      1. USSheridan
    3. COHave you set the `DataContext="{StaticResource SomeSource}"` and the `ItemsSource="{Binding}"`?
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      1. USuser2378527
 

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