[Solved] Adding an item to a List which is DataBinded to a DataGrid

Question

Are you adding items to the data bound List<CustomClass> on a background thread? Then you could use the dispatcher to marshall the Add call to back the UI thread:

Application.Current.Dispatcher.BeginInvoke(new Action(()=> { yourCollection.Add(yourItem); })));

Do this for all Add and Remove operations that modify the source collection.

You should also replace the List<CustomClass> with an ObservableCollection<> if you want the DataGrid to get updated automatically as items are added to the source collection. An ObservableCollection provides change notifications but a List doesn’t: http://msdn.microsoft.com/en-us/library/ms668604%28v=vs.110%29.aspx.

Also make sure that you are adding items to the source collection rather than to the Items property of the DataGrid control.

Accepted Answer

Are you adding items to the data bound List<CustomClass> on a background thread? Then you could use the dispatcher to marshall the Add call to back the UI thread:

Application.Current.Dispatcher.BeginInvoke(new Action(()=> { yourCollection.Add(yourItem); })));

Do this for all Add and Remove operations that modify the source collection.

You should also replace the List<CustomClass> with an ObservableCollection<> if you want the DataGrid to get updated automatically as items are added to the source collection. An ObservableCollection provides change notifications but a List doesn’t: http://msdn.microsoft.com/en-us/library/ms668604%28v=vs.110%29.aspx.

Also make sure that you are adding items to the source collection rather than to the Items property of the DataGrid control.