public add()
{
InitializeComponent();
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
var query = from sp in nw.Suppliers
select new
{
sp.CompanyName
};
foreach (var item in query)
{
SupplierC.Items.Add(item.CompanyName.ToString());
}
var result = from ct in nw.Categories
select new
{
ct.CategoryName
};
foreach (var item in result)
{
CategoryC.Items.Add(item.CategoryName.ToString());
}
}
public MainWindow()
{
InitializeComponent();
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
var query = from emp in nw.Employees
select new
{
emp.TitleOfCourtesy,
emp.FirstName,
emp.LastName
};
var result = from ord in nw.Shippers
join t in nw.Orders on ord.ShipperID equals t.Shipper.ShipperID
select new
{
ord.ShipperID,
ord.CompanyName,
t.Customer.ContactName,
t.CustomerID,
t.Employee.FirstName,
t.ShipAddress,
t.ShipCity,
t.ShipCountry
};
this.empDataGrid.ItemsSource = query.ToList();
this.ordDataGrid.ItemsSource = result.ToList();
}
private void Del_Click(object sender, RoutedEventArgs e)
{
string item = productC.SelectedItem.ToString();
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
var order = from x in nw.Order_Details
join v in nw.Products on x.ProductID equals v.ProductID
where v.ProductName == item
select x;
foreach (Order_Detail res in order)
{
nw.Order_Details.Remove(res);
}
nw.SaveChanges();
var query = from x in nw.Products
where x.ProductName == item
select x;
Product result = query.SingleOrDefault();
if (result != null)
{
nw.Products.Remove(result);
nw.SaveChanges();
confirmLbl.Content = "Product " + item + " Deleted from Database";
}
else
{
MessageBox.Show("An Error Occured");
}
}
private void selc(object sender, SelectionChangedEventArgs e)
{
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
string cat = "";
var result = from pd in nw.Products
join ct in nw.Categories on pd.CategoryID equals ct.CategoryID
select new
{
ct.CategoryName
};
foreach (var item in result)
{
cat = item.CategoryName.ToString();
}
CategoryF.Text = cat;
var res = from pd in nw.Products
join sp in nw.Suppliers on pd.SupplierID equals sp.SupplierID
select new
{
sp.CompanyName
};
foreach (var item in res)
{
cat = item.CompanyName.ToString();
}
SupplierF.Text = cat;
var query = from pd in nw.Products
where pd.ProductName == NameC.SelectedItem
select pd;
Product p = query.SingleOrDefault();
if (query != null)
{
//p.Category = new Category()
//{
// CategoryName = CategoryF.Text,
// CategoryID = 555
//};
//p.Supplier = new Supplier()
//{
// SupplierID = 222,
// CompanyName = SupplierF.Text
//};
//p.UnitPrice = decimal.Parse(PriceF.Text);
//p.QuantityPerUnit = QuantityF.Text;
}
nw.SaveChanges();
}
public delete()
{
InitializeComponent();
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
var res = from pd in nw.Products
select new
{
pd.ProductName
};
foreach (var item in res)
{
productC.Items.Add(item.ProductName.ToString());
}
}
public update()
{
InitializeComponent();
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
int cat = 0;
int sup = 0;
var res = from pd in nw.Products
select new
{
pd.ProductName
};
foreach (var item in res)
{
NameC.Items.Add(item.ProductName.ToString());
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
NORTHWNDEntities1 nw = new NORTHWNDEntities1();
int cat = 0;
int sup = 0;
var res = from sp in nw.Suppliers
where sp.CompanyName == SupplierC.SelectedItem.ToString()
select new
{
sp.SupplierID
};
foreach (var item in res)
{
sup = item.SupplierID;
}
var result = from ct in nw.Categories
where ct.CategoryName == CategoryC.SelectedItem.ToString()
select new
{
ct.CategoryID
};
foreach (var item in result)
{
cat = item.CategoryID;
}
Console.WriteLine(cat + "" + sup);
nw.Products.Add(new Product()
{
ProductName = NameF.Text,
CategoryID = cat,
SupplierID = sup,
UnitsInStock = short.Parse(QuantityF.Text),
UnitPrice = int.Parse(PriceF.Text)
});
nw.SaveChanges();
}
