private static void P13_FindEmployeesByFirstNameStartingWithSA(SoftuniContext context)
{
var employees = context.Employees.Where(e => e.FirstName.StartsWith("SA"));
foreach (Employee e in employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} - {e.JobTitle} - (${e.Salary:f4})");
}
}
private static void P03_EmployeesFullInformation(SoftuniContext context)
{
List <Employee> employees = context.Employees.OrderBy(e => e.EmployeeID).ToList();
foreach (Employee e in employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} {e.MiddleName} {e.JobTitle} {e.Salary}");
}
}
private static void P09_EmployeeId147(SoftuniContext context)
{
Employee employee = context.Employees.FirstOrDefault(e => e.EmployeeID == 147);
Console.WriteLine($"{employee.FirstName} {employee.LastName} {employee.JobTitle}");
foreach (Project p in employee.Projects.OrderBy(p => p.Name))
{
Console.WriteLine($"{p.Name}");
}
}
private static void P04_EmployeesWithSalaryOver50000(SoftuniContext context)
{
var employees = context.Employees
.Where(e => e.Salary > 50000)
.Select(e => e.FirstName);
foreach (string e in employees)
{
Console.WriteLine(e);
}
}
private static void P11_FindLatest10Projects(SoftuniContext context)
{
var projects = context.Projects
.OrderByDescending(p => p.StartDate)
.Take(10)
.OrderBy(p => p.Name);
foreach (Project p in projects)
{
Console.WriteLine($"{p.Name} {p.Description} {p.StartDate:M/d/yyyy h:mm:ss tt}");
}
}
private static void P05_EmployeesFromRD(SoftuniContext context)
{
var employees = context.Employees
.Where(e => e.Department.Name == "Research and Development")
.OrderBy(e => e.Salary)
.ThenByDescending(e => e.FirstName);
foreach (Employee e in employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} from {e.Department.Name} - ${e.Salary:f2}");
}
}
private static void P08_AddressesByTownName(SoftuniContext context)
{
var addresses = context.Addresses
.OrderByDescending(a => a.Employees.Count)
.ThenBy(a => a.Town.Name)
.Take(10);
foreach (Address a in addresses)
{
Console.WriteLine($"{a.AddressText}, {a.Town.Name} - {a.Employees.Count()} employees");
}
}
private static void P10_DepartmentsWithMoreThan5Employees(SoftuniContext context)
{
var departments = context.Departments
.Where(d => d.Employees.Count > 5)
.OrderBy(d => d.Employees.Count);
foreach (Department d in departments)
{
Console.WriteLine($"{d.Name} {d.Manager.FirstName}");
foreach (Employee e in d.Employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} {e.JobTitle}");
}
}
}
private static void P07_FindEmployeesInPeriod(SoftuniContext context)
{
var employees = context.Employees
.Where(e => e.Projects.Count(p => p.StartDate.Year >= 2001 && p.StartDate.Year <= 2003) > 0)
.Take(30);
foreach (Employee e in employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} {e.Manager.FirstName}");
foreach (Project p in e.Projects)
{
Console.WriteLine($"--{p.Name} {p.StartDate:M/d/yyyy h:mm:ss tt} {p.EndDate:M/d/yyyy h:mm:ss tt}");
}
}
}
private static void P12_IncreaseSalaries(SoftuniContext context)
{
string[] departmentNames = new[] { "Engineering", "Tool Design", "Marketing", "Information Services" };
var employees = context.Employees
.Where(e => departmentNames.Contains(e.Department.Name));
foreach (Employee e in employees)
{
e.Salary *= 1.12m;
}
context.SaveChanges();
foreach (Employee e in employees)
{
Console.WriteLine($"{e.FirstName} {e.LastName} (${e.Salary:f6})");
}
}
static void Main(string[] args)
{
SoftuniContext context = new SoftuniContext();
P03_EmployeesFullInformation(context);
P04_EmployeesWithSalaryOver50000(context);
P05_EmployeesFromRD(context);
P06_AddNewAddressUpdateEmployee(context);
P07_FindEmployeesInPeriod(context);
P08_AddressesByTownName(context);
P09_EmployeeId147(context);
P10_DepartmentsWithMoreThan5Employees(context);
P11_FindLatest10Projects(context);
P12_IncreaseSalaries(context);
P13_FindEmployeesByFirstNameStartingWithSA(context);
P15_DeleteProjectById(context);
}
private static void P15_DeleteProjectById(SoftuniContext context)
{
Project targetProject = context.Projects.Find(2);
if (targetProject != null)
{
foreach (Employee employee in targetProject.Employees)
{
employee.Projects.Remove(targetProject);
}
context.Projects.Remove(targetProject);
context.SaveChanges();
}
var projects = context.Projects.Select(p => p.Name).Take(10);
foreach (var p in projects)
{
Console.WriteLine(p);
}
}
private static void P06_AddNewAddressUpdateEmployee(SoftuniContext context)
{
Address address = new Address()
{
AddressText = "Vitoshka 15",
TownID = 4
};
Employee employee = context.Employees.FirstOrDefault(e => e.LastName == "Nakov");
if (employee != null)
{
employee.Address = address;
context.SaveChanges();
}
var employees = context.Employees
.OrderByDescending(e => e.AddressID)
.Take(10)
.Select(e => e.Address.AddressText);
foreach (var addressText in employees)
{
Console.WriteLine(addressText);
}
}
