public int DangNhap(String username, String password) { DataTable pw = m_NguoiDungData.LayPassWord(password); DataTable nd = m_NguoiDungData.LayNguoiDung(username); if (nd.Rows.Count == 0) { return(0); } String matkhau_hethong = nd.Rows[0][3].ToString(); if (matkhau_hethong != password) { return(1); } else { NguoiDungInfo ndinfo = new NguoiDungInfo(nd.Rows[0][0].ToString(), nd.Rows[0][1].ToString(), nd.Rows[0][2].ToString(), nd.Rows[0][3].ToString(), Convert.ToInt32(nd.Rows[0][4])); staticClass.nguoidungStatic = ndinfo; return(2); } }