// Problem 15 - Delete Project by ID
private static void DeleteProjectById(SoftUniContext context, int id)
{
var projectToRemove = context.Projects.First(p => p.ProjectID == id);
foreach (var employee in projectToRemove.Employees)
{
employee.Projects.Remove(projectToRemove);
}
context.Projects.Remove(projectToRemove);
context.SaveChanges();
}
// Problem 12 - Increase Salaries
private static void IncreaseSalaryOfEmployeesFromDepartment(SoftUniContext context, int percentage)
{
var employees = context.Employees
.Where(e => e.Department.Name == "Engineering" ||
e.Department.Name == "Tool Design" ||
e.Department.Name == "Marketing" ||
e.Department.Name == "Information Services");
foreach (var employee in employees)
{
employee.Salary = employee.Salary * (1 + percentage * 0.01m);
Console.WriteLine($"{employee.FirstName} {employee.LastName} (${employee.Salary:F6})");
}
context.SaveChanges();
}
// Problem 06 - Adding a New Address and Updating Employee
private static void AddAddressToEmployeeWithLastName(SoftUniContext context, string text, int townId, string lastName)
{
var employee = context.Employees
.FirstOrDefault(e => e.LastName == lastName);
if (employee == null)
{
return;
}
employee.Address = new Address()
{
AddressText = text,
TownID = townId
};
context.SaveChanges();
}
// Problem 16 - Remove Towns
private static void RemoveTown(SoftUniContext context)
{
Console.Write("Town: ");
string town = Console.ReadLine();
var townToRemove = context.Towns.FirstOrDefault(t => t.Name == town);
if (townToRemove == null)
{
return;
}
int count = townToRemove.Addresses.Count;
var addresses = townToRemove.Addresses.ToList();
foreach (var address in addresses)
{
var employees = context.Employees.Where(e => e.AddressID == address.AddressID);
foreach (var employee in employees)
{
employee.AddressID = null;
employee.Address = null;
}
context.Addresses.Remove(address);
}
context.Towns.Remove(townToRemove);
context.SaveChanges();
string addressStr = count == 1 ? "address" : "addresses";
string isStr = count == 1 ? "was" : "were";
Console.WriteLine($"{count} {addressStr} in {town} {isStr} deleted");
}