c# - 如何获取 ObservableCollection 的变化

Question

public ObservableCollection<IndividualEntityCsidClidDetail> IncludedMembers { get; set; }

假设我有一个对 IncludedMembers 的引用，我希望在添加/删除/编辑集合项时发生一个事件。

Answer 1

处理 CollectionChanged 事件

//注册事件以便每次当集合发生变化时调用CollectionChangedMethod方法

    yourCollection.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler 
(CollectionChangedMethod);

像这样创建一个方法

private void CollectionChangedMethod(object sender, NotifyCollectionChangedEventArgs e)
{
       //different kind of changes that may have occurred in collection
       if(e.Action == NotifyCollectionChangedAction.Add)
        {
            //your code
        }
        if (e.Action == NotifyCollectionChangedAction.Replace)
        {
            //your code
        }
        if (e.Action == NotifyCollectionChangedAction.Remove)
        {
            //your code
        }
        if (e.Action == NotifyCollectionChangedAction.Move)
        {
            //your code
        }
}