The post covers dependency properties, and how to manage DataContext inheritance. This article has been fully translated into the following languages: The TextBlock control - Inline formatting, How-to: ListView with left aligned column names, TreeView, data binding and multiple templates, How-to: Creating a complete Audio/Video player, Multi-threading with the BackgroundWorker, Improving SnakeWPF: Making it look more like a game, Improving SnakeWPF: Adding a high score list. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Is it a bug? What is the best way to do something like this? It's all boiler-plate stuff, you just have to live with it (I'd recommend either using code-snippets, or code generation for DPs). DataContextUserControl ElementSelfDataContext selfWindowWindows DataContext WPF user control binding not worked - Microsoft Q&A Minimising the environmental effects of my dyson brain. Quote: according to most of the opinions online, giving a Usercontrol a viewmodel of its own is an extremely bad idea. GridStackPanel, ?DataContext, DataContext We can now go ahead and bind the label text to this property: However, if you compile and run the above code, you'll find that it doesn't work. expanded event WPF treeview viewmodel You shouldn't be encouraging beginners to use anti-patterns that will cause them trouble and frustration. At the same time, when we design the window hosting our user control, the window constructor again will not be executed, but the control constructor will. A user control acts much like a WPF Window - an area where you can place other controls, and then a Code-behind file where you can interact with these controls. writing a different title in the first textbox, but you might be surprised to see that this change is not reflected immediately. View of a progress report control in the Visual Studio designer, Figure 2. solved the issue. This link does a great job for that. DataContext, WindowUserControl.DataContext This makes direct use of the d:DataContext attribute in user controls impossible and one needs to resolve to a trick. c#/WPF (DataContext = obj) (subclass.var} 11 0 1 0 c#/WPF datacontext datacontext .. {Binding Path=Eyeobj.Farbe}.. DataContenxtWPFs MainWindow.xaml.cs With the DataContext of the control now set to itself, our label is now working: However, now our value has disappeared! It could potentially be added. Doesn't seem very good. To learn more, see our tips on writing great answers. Where to find XAML namespace d="http://schemas.microsoft.com/expression/blend/2008" mapping library? This works, but specifying ElementName every time seems unnecessary. How to follow the signal when reading the schematic? WPF UserControl: DataContext 1 1 3 Thread WPF UserControl: DataContext archived 8484a1fc-4c0e-4b12-9e78-5767c44e204d archived521 This forum has migrated to Microsoft Q&A. VisitMicrosoft Q&Ato post new questions. The UserControl is actually inheriting the DataContext from its parent element.

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