protected void EhTableParentChanged(object sender, Main.ParentChangedEventArgs pce)
{
if (object.ReferenceEquals(this, pce.OldParent) && this.ContainsTable((DataTable)sender))
{
this.Remove((DataTable)sender);
}
else
if (!this.ContainsTable((DataTable)sender))
{
throw new ApplicationException("Not allowed to set child's parent to this collection before adding it to the collection");
}
}
/// <summary>
/// EventHandler used to catch unauthorized parent changes in child objects.
/// </summary>
/// <param name="sender">The child object which signal a parent change.</param>
/// <param name="e">The parent change details.</param>
protected void EhChildParentChanged(object sender, Main.ParentChangedEventArgs e)
{
// this event should not happen, or someone try to
// change the parents of my collection
throw new ApplicationException("Unexpected change of DataColumnsCollection's parent belonging to table " + this.Name);
}
