public override IEnumerable <Model.Customer> GetCustomers()
 {
     using (NorthwindDataContext context = DataContext)
     {
         return(context.Customers.ToArray <Customer>());
     }
 }
 public override IEnumerable <Model.Customer> GetCustomersByCountry(string country)
 {
     using (NorthwindDataContext context = DataContext)
     {
         return(context.Customers.Where(c => c.Country == country).ToArray <Customer>());
     }
 }
 public override int GetCustomerOrdersCount(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         return(context.Orders.Where(c => c.CustomerID == custID).Count());
     }
 }
 public override Model.Customer GetCustomer(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         return(context.Customers.Where(c => c.CustomerID == custID).SingleOrDefault <Customer>());
     }
 }
Exemple #5
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 public void Save()
 {
     using (var context = new NorthwindDataContext())
     {
         Save(context);
     }
 }
 public override IEnumerable <string> GetCountries()
 {
     using (NorthwindDataContext context = DataContext)
     {
         return(context.Customers.Select(c => c.Country).Distinct <string>().ToArray <string>());
     }
 }
 public override int GetCustomerOrdersCount(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         return((int)(from c in context.ap_GetCustomerOrdersCount(custID)
                      select c.Count).SingleOrDefault <int?>());
     }
 }
Exemple #8
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		public List<string> GetCountries()
		{
			using (var context = new NorthwindDataContext())
			{
				return (from c in context.Customers 
						select c.Country).Distinct().ToList();
			}
		}
Exemple #9
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		public List<Customer> GetCustomersByCountry(string country)
		{
			using (var context = new NorthwindDataContext())
			{
				return (from c in context.Customers
				        where c.Country == country
				        select c).ToList();
			}
		}
 public override IEnumerable <string> GetCountries()
 {
     using (NorthwindDataContext context = DataContext)
     {
         IEnumerable <string> countries = (from c in context.ap_GetCountries()
                                           select c.Country).ToArray <string>();
         return(countries);
     }
 }
Exemple #11
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 public override IEnumerable <Model.Customer> GetCustomers()
 {
     using (NorthwindDataContext context = DataContext)
     {
         IEnumerable <Customer> custs = (from c in context.Customers
                                         select c).ToArray <Customer>();
         return(custs);
     }
 }
Exemple #12
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 public override Model.Customer GetCustomer(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         Customer cust = (from c in context.Customers
                          where c.CustomerID == custID
                          select c).SingleOrDefault <Customer>();
         return(cust);
     }
 }
Exemple #13
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        public object GetCategories()
        {
            object categories = null;

            using (var context = new NorthwindDataContext())
            {
                categories = context.LinqCategories.ToList();
            }
            return(categories);
        }
Exemple #14
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        public override IEnumerable <string> GetCountries()
        {
            using (NorthwindDataContext context = DataContext)
            {
                IEnumerable <string> countries = (from c in context.Customers
                                                  select c.Country).Distinct <string>();

                return(countries.ToList <string>());
            }
        }
Exemple #15
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 public override IEnumerable <Model.Customer> GetCustomersByCountry(string country)
 {
     using (NorthwindDataContext context = DataContext)
     {
         IEnumerable <Customer> custs = (from c in context.Customers
                                         where c.Country == country
                                         select c).ToArray <Customer>();
         return(custs);
     }
 }
Exemple #16
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 public override int GetCustomerOrdersCount(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         int count = (from c in context.Orders
                      where c.CustomerID == custID
                      select c).Count();
         return(count);
     }
 }
Exemple #17
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		public Customer GetCustomer(string custID)
		{
			using (var context = new NorthwindDataContext())
			{
				return (from c in context.Customers
				        where c.CustomerID == custID
				        select c).SingleOrDefault();

			}
		}
Exemple #18
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 public override IEnumerable <Model.Order> GetOrders(string custID)
 {
     using (NorthwindDataContext context = DataContext)
     {
         IEnumerable <Order> orders = (from o in context.Orders
                                       where o.CustomerID == custID
                                       select o).ToArray <Order>();
         return(orders);
     }
 }
Exemple #19
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 public void Save(NorthwindDataContext context)
 {
     try
     {
         context.SubmitChanges();
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
         throw;
     }
 }
        public override IEnumerable <OrderDescription> GetOrderDetails(int orderID)
        {
            //The following query tries to mirror the query in OrderDBLINQ but doesn't leverage data relationships
            //in the object model.  A simplified query is shown below.

            //IEnumerable<OrderDescription> orders =
            //    context.Orders.Where(order => order.OrderID == orderID).
            //    Join(context.Shippers, o => o.ShipVia, s => s.ShipperID,
            //      (o, s) => new { o.OrderID, ShipCompanyName = s.CompanyName }).
            //    Join(context.OrderDetails, o => o.OrderID, od => od.OrderID,
            //      (o, od) => new {o.ShipCompanyName, od.ProductID, od.Quantity, od.UnitPrice }).
            //    Join(context.Products, od => od.ProductID, p => p.ProductID,
            //      (OrderDetails, p) => new { OrderDetails, p.ProductName, p.SupplierID }).
            //    Join(context.Suppliers, p => p.SupplierID, s => s.SupplierID,
            //      (OrderData, s) => new { OrderData, SupplierName = s.CompanyName}).
            //    Select(o => new OrderDescription
            //    {
            //        Product = o.OrderData.ProductName,
            //        Quantity = o.OrderData.OrderDetails.Quantity,
            //        ShipperName = o.OrderData.OrderDetails.ShipCompanyName,
            //        Total = o.OrderData.OrderDetails.Quantity * o.OrderData.OrderDetails.UnitPrice,
            //        UnitPrice = o.OrderData.OrderDetails.UnitPrice,
            //        SupplierName = o.SupplierName
            //    });

            using (NorthwindDataContext context = DataContext)
            {
                IEnumerable <OrderDescription> orders =
                    context.Orders.Where(order => order.OrderID == orderID).
                    Join(context.OrderDetails, o => o.OrderID, od => od.OrderID,
                         (o, od) => new
                {
                    ShipCompanyName = o.Shipper.CompanyName,
                    od.ProductID,
                    ProductName  = od.Product.ProductName,
                    Quantity     = od.Quantity,
                    UnitPrice    = od.UnitPrice,
                    SupplierName = od.Product.Supplier.CompanyName
                }).

                    Select(o => new OrderDescription
                {
                    Product      = o.ProductName,
                    Quantity     = o.Quantity,
                    ShipperName  = o.ShipCompanyName,
                    Total        = o.Quantity * o.UnitPrice,
                    UnitPrice    = o.UnitPrice,
                    SupplierName = o.SupplierName
                }).ToArray <OrderDescription>();
                return(orders);
            }
        }
Exemple #21
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        private void simpleToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var ctx = new NorthwindDataContext();

            var sw = new StringWriter();

            ctx.Log = sw;
            var employees = from emp in ctx.Employees
                            where emp.LastName.StartsWith("D")
                            select emp;
            dg.ItemsSource = employees;
            MessageBox.Show(sw.GetStringBuilder().ToString());
        }
Exemple #22
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        public object GetProducts(int catId)
        {
            object productsOfSelectedCategory = null;

            using (var context = new NorthwindDataContext())
            {
                var query = from p in context.LinqProducts
                            where p.CategoryID == catId
                            select p;
                productsOfSelectedCategory = query.ToList();
            }

            return(productsOfSelectedCategory);
        }
Exemple #23
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        public bool DeleteProduct(int productId)
        {
            using (var context = new NorthwindDataContext())
            {
                var query = from p in context.LinqProducts
                            where p.ProductID == productId
                            select p;
                var linqProduct = query.Single();
                context.LinqProducts.DeleteOnSubmit(linqProduct);
                Save(context);
            }

            return(true);
        }
Exemple #24
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        public bool AddProduct(Product product)
        {
            using (var context = new NorthwindDataContext())
            {
                var linqProduct = new LinqProduct();
                linqProduct.ProductName     = product.ProductName;
                linqProduct.SupplierID      = 1;
                linqProduct.CategoryID      = product.CategoryID;
                linqProduct.QuantityPerUnit = product.QuantityPerUnit;
                linqProduct.UnitPrice       = product.UnitPrice;
                linqProduct.UnitsInStock    = (short)product.UnitsInStock;
                linqProduct.UnitsOnOrder    = (short)product.UnitsOnOrder;
                linqProduct.ReorderLevel    = 0;
                linqProduct.Discontinued    = product.Discontinued;

                context.LinqProducts.InsertOnSubmit(linqProduct);
                Save(context);
            }

            return(true);
        }
Exemple #25
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        public override IEnumerable <OrderDescription> GetOrderDetails(int orderID)
        {
            //SQL-ish way of doing it that's a little more complex than it should be
            //IEnumerable<OrderDescription> orders =
            //    from o in context.Orders
            //    where o.OrderID == orderID
            //    join s in context.Shippers on o.ShipVia equals s.ShipperID
            //    join od in context.OrderDetails on o.OrderID equals od.OrderID
            //    join p in context.Products on od.ProductID equals p.ProductID
            //    join supplier in context.Suppliers on p.SupplierID equals supplier.SupplierID
            //    let total = od.Quantity * od.UnitPrice
            //    select new OrderDescription
            //    {
            //        Product = p.ProductName,
            //        Quantity = od.Quantity,
            //        ShipperName = s.CompanyName,
            //        Total = total,
            //        UnitPrice = od.UnitPrice,
            //        SupplierName = supplier.CompanyName
            //    };

            using (NorthwindDataContext context = DataContext)
            {
                IEnumerable <OrderDescription> orderDetails =
                    (from o in context.Orders
                     where o.OrderID == orderID
                     from od in o.OrderDetails
                     let total = od.Quantity * od.UnitPrice
                                 select new OrderDescription
                {
                    Product = od.Product.ProductName,
                    Quantity = od.Quantity,
                    ShipperName = o.Shipper.CompanyName,
                    Total = total,
                    UnitPrice = od.UnitPrice,
                    SupplierName = od.Product.Supplier.CompanyName
                }).ToArray <OrderDescription>();
                return(orderDetails);
            }
        }
        public override OperationStatus DeleteCustomer(Customer cust)
        {
            NorthwindDataContext context = null;

            try
            {
                context = DataContext;
                context.ap_DeleteCustomer(cust.CustomerID);
            }
            catch (Exception exp)
            {
                return(new OperationStatus(false, exp.Message, exp));
            }
            finally
            {
                if (context != null)
                {
                    context.Dispose();
                }
            }
            return(new OperationStatus(true, null, null));
        }
        public virtual OperationStatus InsertCustomer(Customer cust)
        {
            NorthwindDataContext context = null;

            try
            {
                context = DataContext;
                context.Customers.InsertOnSubmit(cust);
                context.SubmitChanges();
            }
            catch (Exception exp)
            {
                return(new OperationStatus(false, exp.Message, exp));
            }
            finally
            {
                if (context != null)
                {
                    context.Dispose();
                }
            }
            return(new OperationStatus(true, null, null));
        }