public override void Assign(RepositoryItem item)
{
base.Assign(item);
RepositoryItemCustomCheckedComboBoxEdit source = item as RepositoryItemCustomCheckedComboBoxEdit;
Events.AddHandler(_convertCheckStateToEditValue, source.Events[_convertCheckStateToEditValue]);
Events.AddHandler(_convertEditValueToCheckState, source.Events[_convertEditValueToCheckState]);
}
static CustomCheckedComboBoxEdit()
{
RepositoryItemCustomCheckedComboBoxEdit.RegisterCustomCheckedComboBoxEdit();
}