public AccountForm()
{
InitializeComponent();
bllND = new NguoiDungBLL();
List <string> list = bllND.GetListQuyen();
cbQuyen.DataSource = list;
((DataGridViewComboBoxColumn)dgvTaiKhoan.Columns["dgvcolQuyen"]).DataSource = cbQuyen.DataSource;
GetDataTaiKhoan();
dgvTaiKhoan.Columns["dgvcolQuyen"].ReadOnly = true;
}