RSRP-469159: Error "Property 'DataContext' is not attachable to elements of type 'Style'" is produced by VS when d:DataContext attribute put on non-control elements

ReSharper supports attaching Blend's d:DataContext attribute to more elements than the attribute was originally designed for, including ControlTemplate and Style which do not support any way of specifying data context (DataTemplate has DataType, d:DataContext isn't required in this case). However, using this feature causes Visual Studio to produce IntelliSense errors on every usage:

Property 'DataContext' is not attachable to elements of type 'ControlTemplate'

According to a post on StackOverflow, ReSharper's developers were searching for solution for over six years. Apparently it wasn't found.

I propose the following solution:

• Add support for alternative XML namespace of http://schemas.microsoft.com/expression/blend/2008, like urn:jetbrains:resharper:xaml. It could then be used instead of xmlns:d="http://schemas.microsoft.com/expression/blend/2008" or in addition to it. It should not cause any issues with compiling, it can just be added to xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable attribute just like Blend's namespaces.

Adding support for it is currently as simple as interpreting some other namespace as http://schemas.microsoft.com/expression/blend/2008. This trivial change would solve the problem of numerous errors in Visual Studio.

Furthermore, the namespace can be extended further. For example, you can add attributes to ignore warnings within a XAML subtree, specify context on bindings, specify type of data in properties other than DataContext. I suspect some of these features have been requested already.