public static string UserLogged = ""; //For tracking the User who logged.
private void btnLogin_Click(object sender, RoutedEventArgs e) //When you hit the Login button....
{
MD5 md5Hash = MD5.Create(); //Initial MD5 hash code for encrypt the password.
if (Properties.Settings.Default.checkerAuto == false) //Check if the "Remember auto login" is unchecked last session.
{
string MD5Password = GetMd5Hash(md5Hash, txtPassword.Password); //Hash the password is typed by User to MD5Password.
user.MD5Password = MD5Password; //This MD5Password will be saved to Database.
user.Username = txtUsername.Text;
}
else
{
user.MD5Password = Properties.Settings.Default.rePassword; //"Remember auto login" is checked so it loads MD5Password from Properties.Settings
user.Username = Properties.Settings.Default.reUsername; //Same as Username.
}
bool valid = BLLogin.TryToLogin(user.Username, user.MD5Password); //Compare the username & hashed password to Database.
bool IsUsernameValid = BLLogin.IfUsernameValid(user.Username); //Check if the username exist.
if (LoginCount < 4)
{
if (valid) //If Username & Hashed Password valid -> Access to main window.
{
LoginSuccess = true;
L3.UserID = user.Username;
Close();
}
else if (IsUsernameValid) //Else check the Username only. If the Username is correct, highlight the Wrong Password notification.
{
lbWrongUsernamePassword.Visibility = Visibility.Hidden;
LoginSuccess = false;
lbPassword.Foreground = new SolidColorBrush(Colors.Red);
txtPassword.BorderBrush = new SolidColorBrush(Colors.Red);
lbWrongPassword.Visibility = Visibility.Visible;
LoginCount++;
}
else //When both Username & Password are wrong. Show the Wrong notification.
{
lbWrongPassword.Visibility = Visibility.Hidden;
LoginSuccess = false;
lbUsername.Foreground = new SolidColorBrush(Colors.Red);
lbWrongUsernamePassword.Visibility = Visibility.Visible;
txtUsername.BorderBrush = new SolidColorBrush(Colors.Red);
LoginCount++;
}
}
else //STOP IT YOUR ACCESS IS DENIED. YOU'VE TYPED INVALID INFORMATION FOR 5 TIMES.
{
LoginCount = 0;
MessageBox.Show("Bạn đã nhập sai quá số lần quy định.\n Màn hình đăng nhập sẽ bị khóa trong 5 phút!");
btnLogin.IsEnabled = false; //Disable Login button.
System.Timers.Timer timer = new System.Timers.Timer(); //Just call the timer to delay 5 minutes.
timer.Interval = 300000; //Bad security. Prevent brute-force temporarily =]]z
timer.Elapsed += new ElapsedEventHandler(EnableBtn);
timer.Enabled = true;
}
/////////////////////The section below do saving if "Remember login information" or "Remember auto login" is checked.
if (ceRememberLogin.IsChecked == true && ceAutoLogin.IsChecked == false)
{
Properties.Settings.Default.checkerUser = true;
Properties.Settings.Default.checkerAuto = false;
Properties.Settings.Default.reUsername = user.Username;
Properties.Settings.Default.Save();
}
else if (ceRememberLogin.IsChecked == false || ceAutoLogin.IsChecked == false)
{
Properties.Settings.Default.checkerUser = false;
Properties.Settings.Default.checkerAuto = false;
Properties.Settings.Default.reUsername = "";
Properties.Settings.Default.rePassword = "";
Properties.Settings.Default.Save();
}
else if (ceAutoLogin.IsChecked == true)
{
Properties.Settings.Default.checkerAuto = true;
Properties.Settings.Default.reUsername = user.Username;
Properties.Settings.Default.rePassword = user.MD5Password;
Properties.Settings.Default.Save();
}
////////////////////End of saving section.
}
