private static void DeleteUser() // method for deleting certain user in the database
{
ServerKernel ser2 = new ServerKernel(); // create instance class ServerKernel
ser2.SendingData("introduce User's Id"); // call method SendingData for send current string
var userId = ser2.ReceivingData(); // call method ReceivingData for get all data from client part
int userI = Int32.Parse(userId); // convert get clients data to the int type
using (UserContext db = new UserContext()) // defined instance about class UserContext
{
var users = db.Users; // got all users from database
foreach (User u in users) // get access about each user in the database
{
if (u.Id == userI) // if id will searched in the database then
{
db.Users.Remove(u); // delete current user from database
break; // and will stop current increment
}
}
db.SaveChanges(); // save database after delete certain user
ser2.SendingData("command performed"); // call method SendingData for send current string
var usersAll = db.Users; // got data about all users from database
ser2.SendingData("all Users from database"); // call method SendingData for send current string
foreach (User u in usersAll) // will got access to the every user in the database
{
ser2.SendingData($"{u.Id}.{u.Name} - {u.Age}"); // will call method SendingData for send certain data about current user
}
}
}
private static void AddUser() // method for defined add new User to the database
{
ServerKernel ser = new ServerKernel(); // create instance about class ServerKernel
ser.SendingData("introduce User's Name"); // call method SendingData for send current string
var userName = ser.ReceivingData(); // call method Receiving for got data from client part
string userN = userName.ToString(); // convert get data to the type string
ser.SendingData("introduce User's Age"); // call method SendingData for send current string
var userAge = ser.ReceivingData(); // call method ReceivingData for get all data from client part
int userA = Int32.Parse(userAge); // convert get data in the int type
using (UserContext db = new UserContext()) // defined variable about class UserContext
{
User newUser = new User {
Name = userN, Age = userA
}; // defined instance with got data
db.Users.Add(newUser); // choice current object and add to the database
db.SaveChanges(); // save new data in the database
ser.SendingData("command performed"); // call method SendingData for send current string
var users = db.Users; // got all users from the database
ser.SendingData("list all users from database ->>"); // call method SendingData for send current string to the client part
foreach (User u in users) // got access to the every object(user) in the database
{
ser.SendingData($"{u.Id}.{u.Name} - {u.Age}"); // call method SendingData for send got data from database to the client part
}
}
}
private static void AddUser() // method for defined add new User to the database
{
ServerKernel ser = new ServerKernel(); // create instance about class ServerKernel
ser.SendingData("introduce User's Name"); // call method SendingData for send current string
var userName = ser.ReceivingData(); // call method Receiving for got data from client part
string userN = userName.ToString(); // convert get data to the type string
ser.SendingData("introduce User's Age"); // call method SendingData for send current string
var userAge = ser.ReceivingData(); // call method ReceivingData for get all data from client part
int userA = Int32.Parse(userAge); // convert get data in the int type
using (UserContext db = new UserContext()) // defined variable about class UserContext
{
User newUser = new User {
Name = userN, Age = userA
}; // defined instance with got data
db.Users.Add(newUser); // choice current object and add to the database
db.SaveChanges(); // save new data in the database
ser.SendingData("command performed"); // call method SendingData for send current string
var users = db.Users; // got all users from the database
StartPoint showUsers = new StartPoint(); // instance for description event about showing all users
showUsers.UsersEvent += showUsers.ShowUsers; // defined current method 'ShowUsers' for event - 'UsersEvent'
if (showUsers.UsersEvent != null) // if event have method for performing
{
showUsers.UsersEvent(users); // call current event
}
}
}
private void ShowUsers(DbSet <User> usersAll) // method for showing all data about users from the database
{
ServerKernel helpVariable = new ServerKernel(); // instance for calling current method -> 'SendingData'
foreach (User u in usersAll) // loop operator
{
helpVariable.SendingData($"{u.Id}.{u.Name} - {u.Age}"); // set certain data about current user to the method - > 'SendingData'
}
}
static void Main(string[] args) // start point
{
ServerKernel servKer = new ServerKernel(); // create instance about ServerKernel class
servKer.AddEvent += AddUser; // binding performed for event AddEvent
servKer.DelEvent += DeleteUser; // binding performed for event DelEvent
servKer.ExitEvent += ExitProgram; // binding performed for current event ExitEvent
//calling in sequence all methods
servKer.DefinedHostComputer(); // ddefined host for new machine
servKer.DefinedAddress(); // created full address about Server part
servKer.DefinedEndPoint(); // defined all data about Server part
servKer.OpenSocket(); // create socket with all data about Server part
servKer.NamingSocket(); // naming socket for next connecting to the Server part
}