I realise this has already had an answer accepted, but I put this together to solve the problem. It uses a similar idea to Delta’s solution, but without the need to subclass the TreeView: public class BindableSelectedItemBehavior : Behavior<TreeView> { #region SelectedItem Property public object SelectedItem { get { return (object)GetValue(SelectedItemProperty); } set { SetValue(SelectedItemProperty, … Read more
Let me answer to your question in three parts. I’m wondering what is “cs.txtCompanyID” in your example? Is it a TextBox control? If yes, then you are on a wrong way. Generally speaking it’s not a good idea to have any reference to UI in your ViewModel. You can ask “Why?” but this is another … Read more
Firstly, you don’t need any of those toolkits/frameworks to implement MVVM. It can be as simple as this… let’s assume that we have a MainViewModel, and PersonViewModel and a CompanyViewModel, each with their own related view and each extending an abstract base class BaseViewModel. In BaseViewModel, we can add common properties and/or ICommand instances and … Read more
If you are talking about dialogue windows and not just about the pop-up message boxes, please consider my approach below. The key points are: I pass a reference to Module Controller into the constructor of each ViewModel (you can use injection). That Module Controller has public/internal methods for creating dialogue windows (just creating, without returning … Read more
In a proper MVVM approach you would have a view model with an abstract representation of a list of rectangles, e.g. like this: public class RectItem { public double X { get; set; } public double Y { get; set; } public double Width { get; set; } public double Height { get; set; } … Read more
The actual meaning of MVVM is: UI is not Data. Data is Data, UI is UI. This means that you should not develop the application in a way that the program logic (often called business logic) is tightly coupled or dependent on the state of UI components, but instead make it dependent on the state … Read more
Your question really seems to be asking 2 questions: Where are some good tutorials on WPF, assuming I have no previous WPF experience? Where are some good tutorials on learning MVVM? Some of these resources may be duplicated in previous answers… Tutorials on WPF A Guided Tour of WPF by Josh Smith I wrote a … Read more