public Employee GetEmployeeById(int empId) { query = @"SELECT emp_no, first_name, last_name FROM employees WHERE emp_no=" + empId + ";"; DBHelper.OpenConnection(); reader = DBHelper.ExecQuery(query); Employee emp = null; if (reader.Read()) { emp = ReadEmployeeInfo(reader); } DBHelper.CloseConnection(); return(emp); }
//查询宿舍日常管理信息 public List <Model.Management> GetManagementDAL(string where = null, int start = 1, int end = 10) { List <Model.Management> ma = new List <Model.Management>(); if (DBHelper.OpenConnection()) { SqlDataReader dr = DBHelper.ExecReader(where); if (dr != null) { while (dr.Read()) { ma.Add(new Model.Management(dr["ManagementID"].ToString(), (int)dr["dormitoryID"], dr["Hygiene"] as string, dr["Inspectors"] as string, (DateTime)dr["ManagementTime"], dr["Explain"] as string, (int)dr["State"])); } } DBHelper.CloseConnection(); } return(ma); }
public User GetUserByUserName(string user_name) { query = @"select user_id, user_name, user_password, registration_date from users where user_name=@username;"; // MySqlCommand command = new MySqlCommand(query); connection = DBHelper.OpenConnection(); MySqlCommand command = new MySqlCommand(query, connection); command.Parameters.AddWithValue("@username", user_name); reader = command.ExecuteReader(); User user = null; if (reader.Read()) { user = new User(reader); } DBHelper.CloseConnection(); return(user); }
public Customer GetCustomerByID(int?UserID) { if (UserID == null) { return(null); } query = $@"select * from Customers where customer_id = " + UserID + ";"; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); Customer cus = null; if (reader.Read()) { cus = GetCustomer(reader); } reader.Close(); DBHelper.CloseConnection(); return(cus); }
public Order GetLastOrderIDPurchase(int?userID) { if (userID == null) { return(null); } Order order = null; query = $@"select max(orderID) from Orders where orderUser = {userID} ;"; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); if (reader.Read()) { order = GetOrder(reader); } reader.Close(); DBHelper.CloseConnection(); return(order); }
public List <Motor> GetMotorByTypeMotor(string Motor_typeID) { query = @"select * from Motor where Motor_TypeID = '" + Motor_typeID + "';"; //DBHelper.OpenConnection(); MySqlCommand command = new MySqlCommand(query, connection); reader = command.ExecuteReader(); List <Motor> listmotor = null; if (reader != null) { listmotor = GetListMotor(command); } reader.Close(); DBHelper.CloseConnection(); return(listmotor); }
public Order GetLastOrderIdPurchase(int?userId) { if (userId == null) { return(null); } Order order = null; query = @"select max(order_id) from Orders where order_customer = " + userId + " "; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); if (reader.Read()) { order = GetOrder(reader); } reader.Close(); DBHelper.CloseConnection(); return(order); }
//根据给定条件查询学员信息 public List <Model.Student> GetStudentDAL(string whereStr = null, int start = 1, int end = 10) { List <Model.Student> stu = new List <Model.Student>(); if (DBHelper.OpenConnection()) { SqlDataReader dr = DBHelper.ExecReader(whereStr); if (dr != null) { while (dr.Read()) { stu.Add(new Model.Student(dr["StudentID"].ToString(), dr["StudentName"] as string, (int)dr["Age"], dr["Gender"] as string, (int)dr["dormitoryID"], dr["Place"] as string, (DateTime)dr["Accommodationtime"], (DateTime)dr["leavetime"], dr["Phone"] as string, dr["Explains"] as string, (int)dr["State"])); } } DBHelper.CloseConnection(); } return(stu); }
//根据给定条件查询维修信息 public List <Model.Repair> GetRepairDAL(string whereStr = null, int start = 1, int end = 10) { List <Model.Repair> re = new List <Model.Repair>(); if (DBHelper.OpenConnection()) { SqlDataReader dr = DBHelper.ExecReader(whereStr); if (dr != null) { while (dr.Read()) { re.Add(new Model.Repair(dr["RepairID"].ToString(), dr["RepairPerso"] as string, dr["RepairName"] as string, (int)dr["dormitoryID"], (DateTime)dr["RepairTime"], (DateTime)dr["HandleTime"], (int)dr["Count"], dr["HandlePerso"] as string, dr["Explain"] as string, (int)dr["State"])); } } DBHelper.CloseConnection(); } return(re); }
public Shoes GetShoesById(int?itemId) { if (itemId == null) { return(null); } query = $@"select it.item_id,it.item_name,itd.item_size,it.item_price,it.item_color,it.item_material,it.item_trademark,itd.item_quantity from Items it, Itemdetails itd where it.item_id = " + itemId + ";"; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); Shoes shoes = null; if (reader.Read()) { shoes = GetShoesInfo(reader); } reader.Close(); DBHelper.CloseConnection(); return(shoes); }
public bool UpdateMoneyCustomer(int customerId, decimal Amount) { if (connection.State == System.Data.ConnectionState.Closed) { connection.Open(); } bool result = false; MySqlCommand command = new MySqlCommand(); command.Connection = connection; command.CommandText = "lock tables Customers write , Orders write, Items write, OrderDetail write;"; command.ExecuteNonQuery(); MySqlTransaction trans = connection.BeginTransaction(); command.Transaction = trans; try { command.Parameters.Clear(); command.CommandText = @"update Customers set Money = Money - @Amount where CusID = @CusID;"; command.Parameters.AddWithValue("@Amount", Amount); command.Parameters.AddWithValue("@CusID", customerId); command.ExecuteNonQuery(); trans.Commit(); result = true; } catch (Exception e) { Console.WriteLine(e.Message); result = false; trans.Rollback(); } finally { command.CommandText = "unlock tables;"; command.ExecuteNonQuery(); DBHelper.CloseConnection(); } return(result); }
public List <Shoes> SearchItem(int temp) { switch (temp) { case 1: query = $@"select it.item_id,it.item_name,itd.item_size,it.item_price,it.item_color,it.item_material,it.item_brand,itd.item_quantity from Items it, Itemdetails itd where item_id = "; break; } reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); List <Shoes> shoes = new List <Shoes>(); while (reader.Read()) { shoes.Add(GetShoesInfo(reader)); } reader.Close(); DBHelper.CloseConnection(); return(shoes); }
//查询宿舍信息 public List <Model.Dormitory> GetDormitoryDAL(string where = null, int start = 1, int end = 10) { List <Model.Dormitory> dor = new List <Model.Dormitory>(); if (DBHelper.OpenConnection()) { SqlDataReader dr = DBHelper.ExecReader("select * from [Dormitory] where [State]=0 " + where + " ORDER BY dormitoryID"); if (dr != null) { while (dr.Read()) { dor.Add(new Model.Dormitory((int)dr["DormitoryID"], dr["dormitoryGrade"] as string, (int)dr["dormitoryPerso"], (int)dr["dormitoryPrice"], dr["beds"] as string, dr["DormitoryBoos"] as string, dr["Explain"] as string, (int)dr["State"], dr["ISBN"] as string)); } } dr.Close(); DBHelper.CloseConnection(); } return(dor); }
public Item GetItemBySize(string itemSize) { if (itemSize == null) { return(null); } query = $@"select it.itemID, it.itemName, it.itemNameEnglish, it.itemQuantity, it.itemDescription, it.itemPreview, it.itemResources ,itdls.itemSize, itdls.itemPrice from Items it, ItemDetails itdls where itdls.itemSize = " + itemSize + ";"; // query = $"select * from Items where itemID = {itemID}"; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); Item item = null; if (reader.Read()) { item = GetItem(reader); } reader.Close(); DBHelper.CloseConnection(); return(item); }
public List <Motor> GetMotorByLicensePlates(string LicensePlate) { query = @"select * from Motor where LicensePlate = '" + LicensePlate + "';"; //DBHelper.OpenConnection(); MySqlCommand command = new MySqlCommand(query, connection); reader = command.ExecuteReader(); List <Motor> listmotor = null; if (reader != null) { listmotor = GetListMotor(command); } reader.Close(); DBHelper.CloseConnection(); return(listmotor); }
//查询来访信息 public List <Model.Visiting> GetVisitingDAL(string where = null, int start = 1, int end = 10) { List <Model.Visiting> vis = new List <Model.Visiting>(); if (DBHelper.OpenConnection()) { SqlDataReader dr = DBHelper.ExecReader(where); if (dr != null) { while (dr.Read()) { vis.Add(new Model.Visiting(dr["VisitingID"].ToString(), (int)dr["dormitoryID"], dr["VisitingName"] as string, (DateTime)dr["VisitingTime"], (DateTime)dr["LikaiTime"], (int)dr["State"])); } } DBHelper.CloseConnection(); } return(vis); }
public bool UpdateStatusOrder(int?orderId) { if (connection.State == System.Data.ConnectionState.Closed) { connection.Open(); } bool result = false; MySqlCommand command = new MySqlCommand(); command.Connection = connection; command.CommandText = "lock tables Customers write , Orders write, Items write, OrderDetail write;"; command.ExecuteNonQuery(); MySqlTransaction trans = connection.BeginTransaction(); command.Transaction = trans; try { command.Parameters.Clear(); command.CommandText = @"Update Orders set OrderStatus = 'Complete' where OrderID = @OrderId;"; command.Parameters.AddWithValue("@OrderId", orderId); command.ExecuteNonQuery(); trans.Commit(); result = true; } catch (Exception e) { Console.WriteLine(e.Message); result = false; trans.Rollback(); } finally { command.CommandText = "unlock tables;"; command.ExecuteNonQuery(); connection.Close(); } DBHelper.CloseConnection(); return(result); }
public int Register(string Username, string Password, string Name, string Email, string Phone, string Birthday, string Gender, string Address) { try { MySqlConnection connection = DBHelper.OpenConnection(); query = @"insert into Customers(customer_account,customer_password,customer_name, customer_email,customer_phone,customer_birthday,customer_gender,customer_address) values ('" + Username + "','" + Password + "','" + Name + "','" + Email + "','" + Phone + "','" + Birthday + "','" + Gender + "','" + Address + "');"; MySqlCommand command = new MySqlCommand(query, connection); command.ExecuteNonQuery(); } catch { Console.WriteLine("could not be registered!"); } finally { DBHelper.CloseConnection(); } return(1); }
public int Register(string userName, string userPassword, string userAccount, string userEmail, string userPhoneNumber, string userBirthday, string userGender) { try { MySqlConnection connection = DBHelper.OpenConnection(); query = @"insert into Users(userName, userAccount, userPassWord, userEmail, userPhoneNumber, userBirthday, userGender) values('" + userName + "','" + userAccount + "','" + userPassword + "','" + userEmail + "','" + userPhoneNumber + "','" + userBirthday + "','" + userGender + "');"; MySqlCommand command = new MySqlCommand(query, connection); command.ExecuteNonQuery(); } catch { // Console.WriteLine("could not be registered!"); } finally { DBHelper.CloseConnection(); } return(1); }
public bool UpdateStatusShoppingCartById(bool isHave, int?userID) { if (userID == null) { return(false); } switch (isHave) { case true: query = $@"update Users set userShoppingCart = false where userID = {userID}"; break; case false: query = $@"update Users set userShoppingCart = true where userID = {userID}"; break; } DBHelper.ExecNonQuery(query, DBHelper.OpenConnection()); DBHelper.CloseConnection(); return(true); }
public Employee GetEmployeeById(int empID) { query = @"select emp_no, first_name, last_name from Employees where emp_no=" + empID + ";"; //Mở kết nối đến database MySqlCommand command = new MySqlCommand(query, connection); reader = command.ExecuteReader(); Employee employee = null; if (reader.Read()) { employee = GetEmployeeInfo(reader); } reader.Close(); DBHelper.CloseConnection(); return(employee); }
public List <Shoes> SearchShoesName() { query = @"select it.item_id,it.item_name,itd.item_size,it.item_price,it.item_color,it.item_material,it.item_trademark,itd.item_quantity from items it, itemdetails itd where it.item_id = itd.item_id;"; List <Shoes> shoes = new List <Shoes>(); try { reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); } catch (System.Exception) { Console.WriteLine("can not connect to database!"); return(null); } while (reader.Read()) { shoes.Add(GetShoesInfo(reader)); } reader.Close(); DBHelper.CloseConnection(); return(shoes); }
public int VerifyRegister(string Username, string Email) { int a; MySqlConnection connection = DBHelper.OpenConnection(); query = @"Select * from Customers where customer_account = '" + Username + "' or customer_email ='" + Email + "';"; MySqlCommand command = new MySqlCommand(query, connection); reader = command.ExecuteReader(); if (reader.Read()) { System.Console.WriteLine("Account or email already exists"); a = 1; } else { System.Console.WriteLine("Registration successful"); a = 2; } reader.Close(); DBHelper.CloseConnection(); return(a); }
public List <Order> ShowOrderUserPaySucess(int?userId) { if (userId == null) { return(null); } List <Order> orders = new List <Order>(); Order or = new Order(); query = @"select ord.order_id as order_id,ordt.amount, ord.order_date, it.item_id ,it.item_name, it.item_price, cus.customer_name, cus.customer_email from Customers cus inner join orders ord on ord.order_customer = cus.customer_id inner join Orderdetails ordt on ord.order_id = ordt.order_id inner join Items it on ordt.item_id = it.item_id where ord.order_customer = " + userId + " and ord.order_id = " + GetLastInsertOrderID(userId) + ";"; reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); while (reader.Read()) { orders.Add(GetOrderPurchaseSuccess(reader)); } reader.Close(); DBHelper.CloseConnection(); return(orders); }
public List <Item> SearchItem(int temp) { DBHelper.OpenConnection(); switch (temp) { case 1: // query = $@"select * from Items where itemID = "; query = $@"select it.itemID, it.itemName, it.itemNameEnglish, it.itemQuantity, it.itemDescription, it.itemPreview, it.itemResources ,itdls.itemSize, itdls.itemPrice, from Items it, ItemDetails itdls where itemID = ;"; break; } reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); List <Item> items = new List <Item>(); while (reader.Read()) { items.Add(GetItem(reader)); } reader.Close(); DBHelper.CloseConnection(); return(items); }
public bool UpdateStatusShoppingCartById(bool isHave, int?UserID) { if (UserID == null) { return(false); } switch (isHave) { case true: query = @"update Customers set UserShoppingCart = false where customer_id = " + UserID + ";"; break; case false: query = @"update Customers set UserShoppingCart = true where customer_id = " + UserID + ";"; break; } DBHelper.ExecNonQuery(query, DBHelper.OpenConnection()); DBHelper.CloseConnection(); return(true); }
public List <Item> GetListItems() { DBHelper.OpenConnection(); // query = $@"select * from Items;"; query = $@"select it.itemID, it.itemName, it.itemNameEnglish, itdls.itemSize, itdls.itemPrice, it.itemPreview, it.itemResources, it.itemQuantity, it.itemDescription from Items it, ItemDetails itdls where it.itemID = itdls.itemID limit 10; "; List <Item> items = new List <Item>(); try { reader = DBHelper.ExecQuery(query, DBHelper.OpenConnection()); } catch (System.Exception) { Console.WriteLine("Ko the connection voi database"); return(null); } while (reader.Read()) { items.Add(GetItem(reader)); } reader.Close(); DBHelper.CloseConnection(); return(items); }
public int ConfirmRegister(string userName, string userEmail) { int a; MySqlConnection connection = DBHelper.OpenConnection(); query = $@"select * from Users where userName = '******' or userEmail = '{userEmail}';"; // query = @"Select * from Users where userName = '******' or userEmail ='" + userEmail + "';"; MySqlCommand command = new MySqlCommand(query, connection); reader = command.ExecuteReader(); if (reader.Read()) { // Console.WriteLine("Account or email already exists"); a = 1; } else { // Console.WriteLine("Registration successful"); a = 2; } reader.Close(); DBHelper.CloseConnection(); return(a); }
public bool CreateOrder(Orders order) { Customer cu = new Customer(); if (connection.State == System.Data.ConnectionState.Closed) { connection.Open(); } // DBHelper.OpenConnection(); bool result = false; MySqlCommand command = new MySqlCommand(); command.Connection = connection; command.CommandText = @"lock tables Items write, Orders write,OrderDetail write;"; command.ExecuteNonQuery(); MySqlTransaction transactions = connection.BeginTransaction(); // order.Customer = new Customer(); command.Transaction = transactions; try { // int customId = order.Customer.CusID; int orderId = 0; command.CommandText = @"insert into Orders(OrderDate,Note,OrderStatus,CusID) values (@OrderDate,@Note,@OrderStatus,@CusID);"; command.Parameters.Clear(); command.Parameters.AddWithValue("@CusID", order.Customer.CusID); command.Parameters.AddWithValue("@OrderStatus", order.Status); command.Parameters.AddWithValue("@Note", order.Note); command.Parameters.AddWithValue("@OrderDate", order.OrderDate); command.ExecuteNonQuery(); command.CommandText = "select LAST_INSERT_ID() as OrderID"; using (reader = command.ExecuteReader()) { if (reader.Read()) { orderId = reader.GetInt32("OrderID"); } } order.OrderID = orderId; foreach (var item in order.Items) { command.Parameters.Clear(); command.CommandText = @"insert into OrderDetail(OrderID,ItemID,ItemCount,Size) values (" + order.OrderID + ", " + item.ItemID + "," + item.ItemCount + ",'" + item.Size + "'" + ");"; command.ExecuteNonQuery(); } transactions.Commit(); result = true; } catch (System.Exception) { transactions.Rollback(); throw; } finally { command.CommandText = "unlock tables"; command.ExecuteNonQuery(); DBHelper.CloseConnection(); } return(result); }
public bool CreateOrder(Order order) { if (order == null || order.ItemsList == null || order.ItemsList.Count == 0) { return(false); } bool result = true; MySqlConnection connection = DbConfiguration.OpenConnection(); MySqlCommand cmd = connection.CreateCommand(); cmd.Connection = connection; //Lock update all tables cmd.CommandText = "lock tables Customers write, Orders write, Items write, OrderDetails write;"; cmd.ExecuteNonQuery(); MySqlTransaction trans = connection.BeginTransaction(); cmd.Transaction = trans; MySqlDataReader reader = null; if (order.OrderCustomer == null || order.OrderCustomer.CustomerName == null || order.OrderCustomer.CustomerName == "") { //set default customer with customer id = 1 order.OrderCustomer = new Customer() { CustmerId = 1 }; } try { if (order.OrderCustomer.CustmerId == null) { //Insert new Customer cmd.CommandText = @"insert into Customers(customer_name, customer_address) values ('" + order.OrderCustomer.CustomerName + "','" + (order.OrderCustomer.CustomerAddress ?? "") + "');"; cmd.ExecuteNonQuery(); //Get new customer id cmd.CommandText = "select customer_id from Customers order by customer_id desc limit 1;"; reader = cmd.ExecuteReader(); if (reader.Read()) { order.OrderCustomer.CustmerId = reader.GetInt32("customer_id"); } reader.Close(); } else { order.OrderCustomer = (new CustomerDAL()).GetById(order.OrderCustomer.CustmerId ?? 0, DBHelper.GetConnection()); } if (order.OrderCustomer == null || order.OrderCustomer.CustmerId == null) { throw new Exception("Can't find Customer!"); } //Insert Order cmd.CommandText = "insert into Orders(customer_id, order_status) values (@customerId, @orderStatus);"; cmd.Parameters.Clear(); cmd.Parameters.AddWithValue("@customerId", order.OrderCustomer.CustmerId); cmd.Parameters.AddWithValue("@orderStatus", OrderStatus.CREATE_NEW_ORDER); cmd.ExecuteNonQuery(); //get new Order_ID // cmd.CommandText = "select order_id from Orders order by order_id desc limit 1;"; cmd.CommandText = "select LAST_INSERT_ID() as order_id"; reader = cmd.ExecuteReader(); if (reader.Read()) { order.OrderId = reader.GetInt32("order_id"); } reader.Close(); //insert Order Details table foreach (var item in order.ItemsList) { if (item.ItemId == null || item.Amount <= 0) { throw new Exception("Not Exists Item"); } //get unit_price cmd.CommandText = "select unit_price from Items where item_id=@itemId"; cmd.Parameters.Clear(); cmd.Parameters.AddWithValue("@itemId", item.ItemId); reader = cmd.ExecuteReader(); if (!reader.Read()) { throw new Exception("Not Exists Item"); } item.ItemPrice = reader.GetDecimal("unit_price"); reader.Close(); //insert to Order Details cmd.CommandText = @"insert into OrderDetails(order_id, item_id, unit_price, quantity) values (" + order.OrderId + ", " + item.ItemId + ", " + item.ItemPrice + ", " + item.Amount + ");"; cmd.ExecuteNonQuery(); //update amount in Items cmd.CommandText = "update Items set amount=amount-@quantity where item_id=" + item.ItemId + ";"; cmd.Parameters.Clear(); cmd.Parameters.AddWithValue("@quantity", item.Amount); cmd.ExecuteNonQuery(); } //commit transaction trans.Commit(); result = true; } catch (Exception ex) { Console.WriteLine(ex.Message); result = false; try { trans.Rollback(); } catch { } } finally { //unlock all tables; cmd.CommandText = "unlock tables;"; cmd.ExecuteNonQuery(); DBHelper.CloseConnection(); } return(result); }