/// <summary>
/// Initializes a new instance of the ColumnEventArgs class with
/// the specified Column source, column index and event type
/// </summary>
/// <param name="source">The Column that Raised the event</param>
/// <param name="index">The index of the Column</param>
/// <param name="eventType">The type of event</param>
/// <param name="oldValue">The old value of the changed property</param>
public I3ColumnEventArgs(I3Column source, int index, I3ColumnEventType eventType, object oldValue) : base()
{
this.source = source;
this.index = index;
this.eventType = eventType;
this.oldValue = oldValue;
}
/// <summary>
/// Initializes a new instance of the ColumnEventArgs class with
/// the specified Column source, column index and event type
/// </summary>
/// <param name="source">The Column that Raised the event</param>
/// <param name="eventType">The type of event</param>
/// <param name="oldValue">The old value of the changed property</param>
public I3ColumnEventArgs(I3Column source, I3ColumnEventType eventType, object oldValue) : this(source, -1, eventType, oldValue)
{
}