/// <summary>
/// Xóa hết các User cOntrol mà panel đang chứa
/// </summary>
public void RemovePanel()
{
pnFr.Controls.Clear();
status = null;
pbus = null;
tbs = null;
rad = null;
}
/// <summary>
/// Khởi tạo lương
/// </summary>
private void UserSalary()
{
RemovePanel();
tbs = new TableSalary();
this.pnFr.Controls.Add(tbs);
pnMove.Top = btWage.Top;
pnMove.Height = btWage.Height;
}