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POHow to make Resharper resolve path for CustomBinding MarkupExtension
 

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  1. POHow to make Resharper resolve path for CustomBinding MarkupExtension
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    <p>I want to create some extended Binding-Markup-Extension, which behaves just like a normal WPF-Binding but does some things more (use different defaults, maybe add some behavior, etc.). Code looks like this:</p> <pre><code>public class CustomBindingExtension : Binding { .. some extra properties and maybe overrides ... } </code></pre> <p>It all works fine including XAML-intellisense, except I just can't make Resharper resolve my Binding-Path correctly. I.e.: using this code I can [Strg]+Click on 'CurrentText' and Resharper lets vs2010 navigate to the code defining the CurrentText-Property.</p> <pre><code>&lt;UserControl x:Name="uc" ...&gt; &lt;TextBox Text="{Binding ViewModel.CurrentText, ElementName=uc}" /&gt; &lt;/UserControl&gt; </code></pre> <p>But using <strong>my</strong> binding, which works correctly at runtime, I just get a Tooltip when hovering 'CurrentText' telling me it is some 'MS.Internal.Design.Metadata.ReflectionTypeNode', and no navigation via [Strg]+Click.</p> <pre><code>&lt;UserControl x:Name="uc" ...&gt; &lt;TextBox Text="{util:CustomBinding ViewModel.CurrentText, ElementName=uc}" /&gt; &lt;/UserControl&gt; </code></pre> <p>I tried the following things: <li>Derive from Binding</li> <li>Derive from <a href="http://www.hardcodet.net/2008/04/wpf-custom-binding-class" rel="nofollow noreferrer">BindingDecoratorBase</a></li> <li>Leave out the 'Extension' suffix for my CustomBinding-class</li> <li>put the Markup-Extension in a separate assembly</li> <li>Use ConstructorArgumentAttribute</li> <li>Property of type string and type PropertyPath for the Path-Property</li></p> <p>I also looked at the original classes Binding and BindingBase, but could not find any more difference to my code. Any ideas what should help here? Or is this just a special treatment of the Binding-MarkupExtension which I can in no way get for my own MarkupExtensions?</p> <p>Update 16.03.2011: Might also be bug or deficiency of Resharper, Jetbrains is investigating the issue: <a href="http://youtrack.jetbrains.net/issue/RSRP-230607" rel="nofollow noreferrer">http://youtrack.jetbrains.net/issue/RSRP-230607</a></p> <p>Update 10.12.2013: Meanwhile, the feature seems to be working (with R# 7.1.3, maybe also earlier versions), I actually use the approach with the BindingDecoratorBase and I like it a lot. Maybe it only works, if your MarkupExtension ends on 'Binding', but mine does, so I am happy.</p>
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    1. COI didn't even know you could do that. When I try it (with a regular Binding) I always get the behavior you get when you use the CustomBinding. Anything special I should do in order to get it working?
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    2. COYeah, Ctrl+Click on CurrentText just selects the word for me. Are you sure that's not an extension that is jumping to the definition? Maybe the Productivity Power Tools?
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    3. COOk, I was not sure about that, seems to be a Resharper-feature. Of course it only works if you are binding to something type-safe like the ViewModel and not the DataContext.
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