public IEnumerable <OrderClass> ViewOrders()
{
var result = new List <OrderClass>();
using (var connection = new SqlConnection(ConnectionString))
{
var command = connection.CreateCommand();
command.CommandText = "select OrderID, CustomerID,EmployeeID,OrderDate,ShippedDate,Freight from Northwind.Orders";
command.CommandType = CommandType.Text;;
connection.Open();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
var Order = new OrderClass();
Order.OrderID = reader.GetInt32(0);
if (!reader.IsDBNull(1))
{
Order.CustomerID = reader.GetString(1);
}
if (!reader.IsDBNull(2))
{
Order.EmployeeID = reader.GetInt32(2);
}
if (!reader.IsDBNull(3))
{
Order.OrderDate = reader.GetDateTime(3);
}
if (reader.IsDBNull(3))
{
Order.OrderStatus = OrderClass.Status.New;
}
else if (reader.IsDBNull(4))
{
Order.OrderStatus = OrderClass.Status.InWork;
}
else
{
Order.OrderStatus = OrderClass.Status.Compl;
}
if (!reader.IsDBNull(5))
{
Order.Freight = (int)reader.GetSqlMoney(5);
}
result.Add(Order);
}
}
}
return(result);
}
public IEnumerable<OrderClass> ViewOrders()
{
var result = new List<OrderClass>();
using (var connection = new SqlConnection(ConnectionString))
{
var command = connection.CreateCommand();
command.CommandText = "select OrderID, CustomerID,EmployeeID,OrderDate,ShippedDate,Freight from Northwind.Orders";
command.CommandType = CommandType.Text; ;
connection.Open();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
var Order = new OrderClass();
Order.OrderID = reader.GetInt32(0);
if (!reader.IsDBNull(1)) Order.CustomerID = reader.GetString(1);
if (!reader.IsDBNull(2)) Order.EmployeeID = reader.GetInt32(2);
if (!reader.IsDBNull(3)) Order.OrderDate = reader.GetDateTime(3);
if (reader.IsDBNull(3))
{
Order.OrderStatus = OrderClass.Status.New;
}
else if (reader.IsDBNull(4))
{
Order.OrderStatus = OrderClass.Status.InWork;
}
else
{
Order.OrderStatus = OrderClass.Status.Compl;
}
if (!reader.IsDBNull(5)) Order.Freight = (int)reader.GetSqlMoney(5);
result.Add(Order);
}
}
}
return result;
}
public OrderClass GetOrdersById(int id)
{
OrderClass Order = new OrderClass();
using (var connection = new SqlConnection(ConnectionString))
{
var command = new SqlCommand(
"select Northwind.Orders.OrderID, Northwind.Orders.CustomerID,Northwind.Orders.EmployeeID,OrderDate," +
"ShippedDate,ProductName,Northwind.[Order Details].UnitPrice,Quantity,Discount," +
"RequiredDate, ShipVia, ShipName, ShipAddress, ShipCity, ShipRegion, ShipPostalCode, ShipCountry from Northwind.Orders " +
"LEFT JOIN Northwind.[Order Details] ON Northwind.Orders.OrderID = Northwind.[Order Details].OrderID " +
"LEFT JOIN Northwind.Products ON Northwind.[Order Details].ProductID = Northwind.Products.ProductID", connection);
connection.Open();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
if (reader.GetInt32(0) == id)
{
if (!reader.IsDBNull(0)) Order.OrderID = reader.GetInt32(0);
if (!reader.IsDBNull(1)) Order.CustomerID = reader.GetString(1);
if (!reader.IsDBNull(2)) Order.EmployeeID = reader.GetInt32(2);
if (!reader.IsDBNull(3)) Order.OrderDate = reader.GetDateTime(3);
if (reader.IsDBNull(3))
{
Order.OrderStatus = OrderClass.Status.New;
}
else if (reader.IsDBNull(4))
{
Order.OrderDate = reader.GetDateTime(3);
Order.OrderStatus = OrderClass.Status.InWork;
}
else
{
Order.ShippedDate = reader.GetDateTime(4);
Order.OrderStatus = OrderClass.Status.Compl;
}
if (!reader.IsDBNull(5)) Order.ProductsName.Add(reader.GetString(5));
if (!reader.IsDBNull(6)&&(!reader.IsDBNull(7))&&(!reader.IsDBNull(8)))
Order.Price = (double)reader.GetSqlMoney(6).ToSqlInt32() * reader.GetInt16(7) -
(double)reader.GetSqlMoney(6).ToSqlInt32() * reader.GetInt16(7) * (double)reader.GetSqlSingle(8).ToSqlDouble();
if (!reader.IsDBNull(9)) Order.RequiredDate = reader.GetDateTime(9);
if (!reader.IsDBNull(10)) Order.ShipVia = reader.GetInt32(10);
if (!reader.IsDBNull(11)) Order.ShipName = reader.GetString(11);
if (!reader.IsDBNull(12)) Order.ShipAddress = reader.GetString(12);
if (!reader.IsDBNull(13)) Order.ShipCity = reader.GetString(13);
if (!reader.IsDBNull(14)) Order.ShipRegion = reader.GetString(14);
if (!reader.IsDBNull(15)) Order.ShipPostalCode = reader.GetString(15);
if (!reader.IsDBNull(16)) Order.ShipCountry = reader.GetString(16);
}
}
}
}
return Order;
}
public OrderClass GetOrdersById(int id)
{
OrderClass Order = new OrderClass();
using (var connection = new SqlConnection(ConnectionString))
{
var command = new SqlCommand(
"select Northwind.Orders.OrderID, Northwind.Orders.CustomerID,Northwind.Orders.EmployeeID,OrderDate," +
"ShippedDate,ProductName,Northwind.[Order Details].UnitPrice,Quantity,Discount," +
"RequiredDate, ShipVia, ShipName, ShipAddress, ShipCity, ShipRegion, ShipPostalCode, ShipCountry from Northwind.Orders " +
"LEFT JOIN Northwind.[Order Details] ON Northwind.Orders.OrderID = Northwind.[Order Details].OrderID " +
"LEFT JOIN Northwind.Products ON Northwind.[Order Details].ProductID = Northwind.Products.ProductID", connection);
connection.Open();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
if (reader.GetInt32(0) == id)
{
if (!reader.IsDBNull(0))
{
Order.OrderID = reader.GetInt32(0);
}
if (!reader.IsDBNull(1))
{
Order.CustomerID = reader.GetString(1);
}
if (!reader.IsDBNull(2))
{
Order.EmployeeID = reader.GetInt32(2);
}
if (!reader.IsDBNull(3))
{
Order.OrderDate = reader.GetDateTime(3);
}
if (reader.IsDBNull(3))
{
Order.OrderStatus = OrderClass.Status.New;
}
else if (reader.IsDBNull(4))
{
Order.OrderDate = reader.GetDateTime(3);
Order.OrderStatus = OrderClass.Status.InWork;
}
else
{
Order.ShippedDate = reader.GetDateTime(4);
Order.OrderStatus = OrderClass.Status.Compl;
}
if (!reader.IsDBNull(5))
{
Order.ProductsName.Add(reader.GetString(5));
}
if (!reader.IsDBNull(6) && (!reader.IsDBNull(7)) && (!reader.IsDBNull(8)))
{
Order.Price = (double)reader.GetSqlMoney(6).ToSqlInt32() * reader.GetInt16(7) -
(double)reader.GetSqlMoney(6).ToSqlInt32() * reader.GetInt16(7) * (double)reader.GetSqlSingle(8).ToSqlDouble();
}
if (!reader.IsDBNull(9))
{
Order.RequiredDate = reader.GetDateTime(9);
}
if (!reader.IsDBNull(10))
{
Order.ShipVia = reader.GetInt32(10);
}
if (!reader.IsDBNull(11))
{
Order.ShipName = reader.GetString(11);
}
if (!reader.IsDBNull(12))
{
Order.ShipAddress = reader.GetString(12);
}
if (!reader.IsDBNull(13))
{
Order.ShipCity = reader.GetString(13);
}
if (!reader.IsDBNull(14))
{
Order.ShipRegion = reader.GetString(14);
}
if (!reader.IsDBNull(15))
{
Order.ShipPostalCode = reader.GetString(15);
}
if (!reader.IsDBNull(16))
{
Order.ShipCountry = reader.GetString(16);
}
}
}
}
}
return(Order);
}