private void FindOrderButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
var orderId = int.Parse(OrderIdTextBox.Text);
var order = from o in dbContext.Orders
where o.OrderID == orderId
select new
{
o.OrderID,
o.Date,
o.Product,
o.UnitPrice,
o.Quantity,
o.TotalPrice,
o.Customer.Name,
o.Employee.UserName
};
if (!order.Any())
{
MessageBox.Show(string.Format("Order {0} not found in the databse!", orderId), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
OrdersDataGrid.DataSource = order.ToList();
MessageBox.Show(string.Format("Order {0} successfully found in the databse!", orderId), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
private void PlaceOrderButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
int quantity = int.Parse(quantityTextBox.Text);
decimal unitPrice = decimal.Parse(unitPriceTextBox.Text);
Order order = new Order
{
CustomerID = Manager.customer.CustomerID,
Date = dateDateTimePicker.Value,
EmployeeID = Manager.employee.EmployeeID,
Product = productTextBox.Text,
Quantity = quantity,
UnitPrice = unitPrice,
TotalPrice = quantity * unitPrice,
};
var totalPrice = unitPrice * quantity;
dbContext.Orders.Add(order);
dbContext.SaveChanges();
orderIDTextBox.Text = order.OrderID.ToString();
totalPriceTextBox.Text = totalPrice.ToString();
MessageBox.Show(string.Format("Order {0} successfully registered!", orderIDTextBox.Text), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void BrowseAllButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
var orders = from o in dbContext.Orders
orderby o.OrderID
select new
{
o.OrderID,
o.Date,
o.Product,
o.UnitPrice,
o.Quantity,
o.TotalPrice,
o.Customer.Name,
o.Employee.UserName
};
if (orders.Any())
{
OrdersDataGrid.DataSource = orders.ToList();
}
else
{
MessageBox.Show("No orders found in the databse!", "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
}
private void QuestionsComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
ComboBox cb = sender as ComboBox;
ResultsDataGridView.DataSource = null;
ResultsDataGridView.Rows.Clear();
if (cb.SelectedIndex == 0)
{
var users = from emp in dbContext.Employees
join ord in dbContext.Orders on emp.EmployeeID equals ord.EmployeeID
where ord.Date >= DateTime.Today
select new
{
emp.EmployeeID,
emp.UserName,
ord.OrderID,
ord.Date,
ord.Product,
ord.Quantity,
ord.UnitPrice,
ord.TotalPrice,
ord.Customer.Name
};
ResultsDataGridView.DataSource = users.ToList();
}
else
{
var users = from emp in dbContext.Employees
join ord in dbContext.Orders on emp.EmployeeID equals ord.EmployeeID
join acc in dbContext.Customers on ord.CustomerID equals acc.CustomerID
where acc.ShipCountry == "Canada"
select new
{
emp.EmployeeID,
emp.UserName,
ord.OrderID,
ord.Date,
ord.Product,
ord.Quantity,
ord.UnitPrice,
ord.TotalPrice,
ord.Customer.Name,
ord.Customer.ShipCountry
};
ResultsDataGridView.DataSource = users.ToList();
}
}
}
private void DeleteOrderButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
var orderId = int.Parse(OrderIdTextBox.Text);
var order = from o in dbContext.Orders
where o.OrderID == orderId
select o;
dbContext.Orders.Remove(order.First());
dbContext.SaveChanges();
MessageBox.Show(string.Format("Order {0} successfully deleted!", OrderIdTextBox.Text), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Information);
OrdersDataGrid.DataSource = null;
OrdersDataGrid.Rows.Clear();
}
}
private void RegisterButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
dbContext.Employees.Add(
new Employee
{
UserName = UserNameTextBox.Text,
Password = PasswordTextBox.Text
}
);
dbContext.SaveChanges();
MessageBox.Show(string.Format("User {0} successfully registered!", UserNameTextBox.Text), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void CreateAccountButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
Customer cust = new Customer
{
Name = nameTextBox.Text,
ShipAddress = shipAddressTextBox.Text,
ShipCity = shipCityTextBox.Text,
ShipCountry = shipCountryTextBox.Text
};
dbContext.Customers.Add(cust);
dbContext.SaveChanges();
customerIDTextBox.Text = cust.CustomerID.ToString();
MessageBox.Show(string.Format("Customer {0} successfully registered!", nameTextBox.Text), "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void customerIDTextBox_Leave(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
var customerId = int.Parse(customerIDTextBox.Text);
var customer = from cust in dbContext.Customers
where cust.CustomerID == customerId
select cust;
if (!customer.Any())
{
MessageBox.Show(string.Format("Customer {0} does not exist in the databse!", customerIDTextBox.Text),
"Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
Manager.customer = customer.First();
nameTextBox.Text = Manager.customer.Name;
}
}
}
private void LoginButton_Click(object sender, EventArgs e)
{
using (SalesEntities dbContext = new SalesEntities())
{
var login = from emp in dbContext.Employees
where emp.UserName == UserNameTextBox.Text && emp.Password == PasswordTextBox.Text
select emp;
if (!login.Any())
{
MessageBox.Show("User Name or Password invalid!", "Sales Application", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
// SHOW THE WELCOME WINDOW
Hide();
Manager.employee = login.First();
Manager.welcomeForm = new WelcomeForm();
Manager.welcomeForm.ShowDialog();
}
}
}
