private void RemoveIndividualToActivity()
{
string errorMessage = String.Empty;
if (assignedTree.SelectedNode != null)
{
if (activityDataSource.DataSource != null)
{
Individual peep = (Individual)assignedTree.SelectedNode.Tag;
Activity act = (Activity)activityDataSource.DataSource;
Controller.DeleteActivityIndividual(act, peep, out errorMessage);
if (String.IsNullOrEmpty(errorMessage))
{
act.IndividualList.Add(peep);
refreshActivityTab();
}
}
}
}