I tried to bind to the class only, then I can add rows but when I try to edit them i get the error 'EditItem' is not allowed for this view. be sure that your datacontext and binding is right in xaml :) btw DataContext="" makes no sense for me. 1 How do I bind a ObservableCollection updateCollection to a DataGrid I tried several solution but none seem to work as rows are added to the collection but don't show up on the grid.alter your source collection with clear, add, remove this.Måollection.Clear() įoreach(var item in MyNewCollectionFromAnywhere) within the ctor) like you did this.MyView = CollectionViewSource.GetDefaultView(Måollection) your wrapped item "TodoItem" should implement INotifyPropertåhanged to notifiy changes/edits to WPF ui this.Måollection = new OberservableCollection() this collection will handle Add and Remove and notify the WPF ui. just create a OberservableCollection once (eg. simply use clear() add() and remove() to alter your Storage.TodoItems. The more important thing is that the Storage.TodoItems should just initialize once otherwise TodoItemsCollection = CollectionViewSource.GetDefaultView(Storage.TodoItems) have to be called every time a new Storage.TodoItems is created. In addition to liquidsnake786 answer - you can use the ObservableCollection instead of the ICollectionView and filtering/sorting will work just the same as long as you use CollectionViewSource.GetDefaultView(Storage.TodoItems). Usually, calling Refresh() or resetting the ItemsSource worked well for them.Īny suggestions are really much appreciated!! I read about three dozens of blog posts and couldn't find a solution to my problems. However, the filtering then doesn't work anymore. (and so, that's why you haven't found one) To answer though you could write your own, I would do it by deriving from ObservableCollection, then in the case of a stack implementing the Push as an Insert at offset 0 (and pop as. It's what differentiates them from a List. This manual refresh displays the new/changed/removed items. With Stacks and Queues (almost by definition) you only have access to the top of the stack or head of the queue.With a refresh button (only for testing purposes), I set the ItemsSource of the DataGrid to null and reset it ( TodoItemsCollection = CollectionViewSource.GetDefaultView(Storage.TodoItems) ). the DataGrid is not updated).įor example if I call TodoItemsCollection.Refresh(), nothing changes. However, the problem is that all those changes are not reflected in the DataGrid (i.e. This changes should immediately be displayed in the DataGrid. Storage.TodoItems is an ObservableCollection where a tracker adds, edits and removes items. Public ICollectionView TodoItemsCollection TodoItemsCollection Property private ICollectionView _todoItemsCollection (Storage.TodoItems is an ObservableCollection) TodoItemsCollection.Filter = TodoItemsFilter Jan 23, 2022, 11:12 PM Hello, Welcome to Microsoft Q&A So you want to trigger the Sorting event but you don't want the AutoGeneratingColumn event is triggered, is that right I'd suggest you using the AdvancedCollectionView from the NuGet package as the itemssource instead of directly using the ObservableCollection. I have a (WPF) DataGrid where I attach an ICollectionView asĬonstructor (Code behind) TodoItemsCollection = CollectionViewSource.GetDefaultView(Storage.TodoItems)
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