Wpf combobox itemssource binding not updating
They all lived happily on a WPF Window bound together in blissful MVVM harmony.The Text Boxes were bound to the View Model’s Text Box Text property and the Combo Boxes to the Combo Box Selected Item property. By assigned a NOP (no operation) lambda, I don’t have to check whether any listeners are registered for the event.Let’s create a new type derived from Combo Box to fix this problem.I perform the normal On Selection Changed event and then update the Combo Box’s Selected Item Property from the bound View Model if a binding exists.A quick google search will find you a ton of information on this topic.
He received his Bachelors degree from the University of Toronto and his Masters degree from Harvard University.(The actual business requirement was more sensible. If the previous entity wasn’t saved, the user would be presented with a save dialog and standard “yes/no/cancel” options.On cancel, I wanted to disregard the Combo Box change and revert back to the previously selected entity.) So based on business rules, we’ve ignored a change to the view model.Or maybe not – the reason behind this is not entirely clear to me. Once upon a time there were four friends – two Text Boxes and two Combo Boxes.