private void bsUnitList_CurrentChanged(object sender, EventArgs e)
{
bsUnitItem.DataSource = SelectedUnit.LoadCopy(Database);
bsNonUserList.DataSource = SelectedUnit.GetUserList(Database, 0);
bsCreatorGroup.DataSource = SelectedUnit.GetUserList(Database, EntryControlDatabase.MaterialCreatorGroup);
bsSignerGroup.DataSource = SelectedUnit.GetUserList(Database, EntryControlDatabase.MaterialSignerGroup);
tblPanelUser.Visible = true;
}