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:

    public class CustomBindingExtension : Binding
    {
      .. some extra properties and maybe overrides ...
    }

It all works fine including XAML-intellisense, except I just can&#39;t make Resharper resolve my Binding-Path correctly.
I.e.: using this code I can [Strg]+Click on &#39;CurrentText&#39; and Resharper lets vs2010 navigate to the code defining the CurrentText-Property.
   
    &lt;UserControl x:Name=&quot;uc&quot; ...&gt;
      &lt;TextBox Text=&quot;{Binding ViewModel.CurrentText, ElementName=uc}&quot; /&gt;
    &lt;/UserControl&gt;

But using **my** binding, which works correctly at runtime, I just get a Tooltip when hovering &#39;CurrentText&#39; telling me it is some &#39;MS.Internal.Design.Metadata.ReflectionTypeNode&#39;, and no navigation via [Strg]+Click.

    &lt;UserControl x:Name=&quot;uc&quot; ...&gt;
      &lt;TextBox Text=&quot;{util:CustomBinding ViewModel.CurrentText, ElementName=uc}&quot; /&gt;
    &lt;/UserControl&gt;

I tried the following things:
&lt;li&gt;Derive from Binding&lt;/li&gt;
&lt;li&gt;Derive from &lt;a href=&quot;http://www.hardcodet.net/2008/04/wpf-custom-binding-class&quot;&gt;BindingDecoratorBase&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;Leave out the &#39;Extension&#39; suffix for my CustomBinding-class&lt;/li&gt;
&lt;li&gt;put the Markup-Extension in a separate assembly&lt;/li&gt;
&lt;li&gt;Use ConstructorArgumentAttribute&lt;/li&gt;
&lt;li&gt;Property of type string and type PropertyPath for the Path-Property&lt;/li&gt;

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?

Update 16.03.2011: Might also be bug or deficiency of Resharper, Jetbrains is investigating the issue: http://youtrack.jetbrains.net/issue/RSRP-230607

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 &#39;Binding&#39;, but mine does, so I am happy.

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How to make Resharper resolve path for CustomBinding MarkupExtension