ListChangedEventArgs.cs

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namespace System.ComponentModel;
 
public class ListChangedEventArgs : EventArgs
{
    public ListChangedType ListChangedType { get; }
 
    public int NewIndex { get; }
 
    public int OldIndex { get; }
 
    public PropertyDescriptor? PropertyDescriptor { get; }
 
    public ListChangedEventArgs(ListChangedType listChangedType, int newIndex)
        : this(listChangedType, newIndex, -1)
    {
    }
 
    public ListChangedEventArgs(ListChangedType listChangedType, int newIndex, PropertyDescriptor? propDesc)
        : this(listChangedType, newIndex)
    {
        PropertyDescriptor = propDesc;
        OldIndex = newIndex;
    }
 
    public ListChangedEventArgs(ListChangedType listChangedType, PropertyDescriptor? propDesc)
    {
        ListChangedType = listChangedType;
        PropertyDescriptor = propDesc;
    }
 
    public ListChangedEventArgs(ListChangedType listChangedType, int newIndex, int oldIndex)
    {
        ListChangedType = listChangedType;
        NewIndex = newIndex;
        OldIndex = oldIndex;
    }
}