[C#]	public event WPFSelectionEventHandler SelectionChanged;
[VB]	Public Event SelectionChanged As WPFSelectionEventHandler

This event occurs when the user is selecting a region on the chart using "drag to select" mouse actions.

WPFSelectionEventHandler is a delegate representing the signature of the method that can be used to handle hot spot events. It is declared as follows.

[VB]	Public Delegate Sub WPFSelectionEventHandler(sender As Object, e As WPFSelectionEventArgs)
[C#]	public delegate void WPFSelectionEventHandler(object sender, WPFSelectionEventArgs e);

In the above, "sender" is the object that raises the event, and "e" is a WPFSelectionEventArgs object that contains the event data.