| c# Programming Glossary: e.actionObservable Collection Property Changed on Item in the Collection http://stackoverflow.com/questions/1015126/observable-collection-property-changed-on-item-in-the-collection  object sender NotifyCollectionChangedEventArgs e switch e.Action  case NotifyCollectionChangedAction.Add foreach SomeItem item.. 
 Using the WPF Dispatcher in unit tests http://stackoverflow.com/questions/1106881/using-the-wpf-dispatcher-in-unit-tests  e raisedCollectionChanged true Assert.IsTrue e.Action NotifyCollectionChangedAction.Add The action was not add. Assert.IsTrue.. 
 MVVM Sync Collections http://stackoverflow.com/questions/1256793/mvvm-sync-collections  populated. if IsPopulated return Apple apple switch e.Action case NotifyCollectionChangedAction.Add apple e.NewItems 0 as.. 
 ObservableCollection element-wise Transform/Projection Wrapper http://stackoverflow.com/questions/13920703/observablecollection-element-wise-transform-projection-wrapper  object sender NotifyCollectionChangedEventArgs e  switch e.Action   case NotifyCollectionChangedAction.Add  if e.NewItems null.. 
 ObservableCollection not noticing when Item in it changes (even with INotifyPropertyChanged) http://stackoverflow.com/questions/1427471/observablecollection-not-noticing-when-item-in-it-changes-even-with-inotifyprop  object sender NotifyCollectionChangedEventArgs e  if e.Action NotifyCollectionChangedAction.Remove  foreach EntityViewModel.. EntityViewModelPropertyChanged   else if e.Action NotifyCollectionChangedAction.Add  foreach EntityViewModel item.. 
 WPF MVVM: how to bind GridViewColumn to ViewModel-Collection? http://stackoverflow.com/questions/2643545/wpf-mvvm-how-to-bind-gridviewcolumn-to-viewmodel-collection  view if gridViews null gridViews.Count 0  return switch e.Action   case NotifyCollectionChangedAction.Add  foreach var gridView.. 
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