markup-extensions

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'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. <UserControl x:Name="uc" ...>

I'm talking about extensions such as x:Reference and x:FactoryMethod , collectively appearing here . I'm reading a lot of contradictory information online, including on MSDN, Stackoverflow, and from other sources. I'll talk about x:Reference as an example, but I'm actually referring to the other markup extensions as well. The primary causes of confusion are the following excerpts from MSDN: XAML 2009 Language Support in WPF In WPF, you can use XAML 2009 features, but only for XAML that is not WPF markup-compiled. Markup-compiled XAML and the BAML form of XAML do not currently support the XAML

Fall Creators update SDK added a Markup Extension class, great. https://docs.microsoft.com/en-us/uwp/api/windows.ui.xaml.markup.markupextension So I create one and override and "ProvideValue" method. public class MDL2 : MarkupExtension { ... public string Target { get; set; } protected override object ProvideValue() { ... } } I attempt to use it as such in a style: <Setter Property="IconGlyph" Value="{u:MDL2 Target='Delete'}" /> Now, this will properly call the constructor for my MDL2 extension, and set the Target property to a string value of "Delete". So far so good. Except, the ProvideValue

How do you set a custom MarkupExtension from code? You can easily set if from Xaml. The same goes for Binding and DynamicResource . <TextBox FontSize="{Binding MyFontSize}" Style="{DynamicResource MyStyle}" Text="{markup:CustomMarkup}"/> Setting the same values through code behind requires a little different approach Binding: Use textBox.SetBinding or BindingOperations.SetBinding Binding binding = new Binding("MyFontSize"); BindingOperations.SetBinding(textBox, TextBox.FontSizeProperty, binding); DynamicResource: Use SetResourceReference textBox.SetResourceReference(TextBox.StyleProperty,

I am trying to make string.Format available as a handy function in WPF, so that the various text parts can be combined in pure XAML, without boilerplate in code-behind. The main problem is support of the cases where the arguments to the function are coming from other, nested markup extensions (such as Binding ). Actually, there is a feature which is quite close to what I need: MultiBinding . Unfortunately it can accept only bindings , but not other dynamic type of content, like DynamicResource s. If all my data sources were bindings, I could use markup like this: <TextBlock> <TextBlock.Text>