How to let a parent class know about a change in its children?

Question

This is an example code:

public class MyParent : INotifyPropertyChanged
{
    List MyChildren;

    public bool IsChanged
    {
        get
               


        

Answer 1

You can simplify things for yourself by storing your children in an ItemObservableCollection, as discussed in this answer. That would allow you to do this:

private ItemObservableCollection children;

public MyParent()
{
    this.children = new ItemObservableCollection();
    this.children.ItemPropertyChanged += delegate(object sender, PropertyChangedEventArgs e)
    {
        if (string.Equals("IsChanged", e.PropertyName, StringComparison.Ordinal))
        {
            this.RaisePropertyChanged("IsChanged");
        }
    };
}