private void BtnCancel_Click(object sender, RoutedEventArgs e)
{
// Clear the login form
Lbl_ErrorLabel.Visibility = Visibility.Collapsed;
TbxPassword.Clear();
TbxUsername.Clear();
}
/// <summary>
/// Method used to log the user into the application
/// </summary>
private void UserLogin()
{
// Create local variables
SystemUser validatedUser = null;
MainDashboard mainDashboard;
bool userValidated = false;
string userName = TbxUsername.Text.Trim();
string userPassword = TbxPassword.Password.Trim();
if (loginAttemptCount < 3)
{
// Loop through all the system users available in the System Database
loginAttemptCount++;
if (validationUtils.ValidateUserInput(userName, userPassword))
{
try
{
// Get the system user who matches the form data
var systemUser = smaDB.SystemUsers.FirstOrDefault(s => s.Username == userName && s.Password == userPassword);
if (systemUser.UserId > 0)
{
// Set the system user to the validated user
validatedUser = systemUser;
userValidated = true;
}
}
catch (Exception)
{
// Display an error if the login was unsuccessful
if (loginAttemptCount < 3)
{
Lbl_ErrorLabel.Content = "Username or Password incorrect";
Lbl_ErrorLabel.Visibility = Visibility.Visible;
TbxPassword.Clear();
TbxUsername.Clear();
// Update the system logs if the login was unsucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = 1002,
EventTypeId = 1003,
EventDateTime = DateTime.Now,
EventData = $"Invalid Login attempt for unknown user at { DateTime.Now} , using {userName} / {userPassword} combination"
});
}
else
{
// Display an error after 3 failed logins
MessageBox.Show("3 Failed Logins System now shutdown, Please contact the System Administrator", "Login Error", MessageBoxButton.OK, MessageBoxImage.Error);
// Update the system logs if the login was unsucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = 1002,
EventTypeId = 1003,
EventDateTime = DateTime.Now,
EventData = $"System locked after 3 failed attempts for unknown user at { DateTime.Now} , using {userName} / {userPassword} combination"
});
// Exit the application
Close();
Environment.Exit(0);
}
}
}
else
{
if (loginAttemptCount < 3)
{
Lbl_ErrorLabel.Content = "Invalid Credentials";
Lbl_ErrorLabel.Visibility = Visibility.Visible;
TbxPassword.Clear();
TbxUsername.Clear();
// Update the system logs if the login was unsucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = 1002,
EventTypeId = 1003,
EventDateTime = DateTime.Now,
EventData = $"Invalid Login attempt for unknown user at { DateTime.Now} , using {userName} / {userPassword} combination"
});
}
else
{
// Display an error after 3 failed logins
MessageBox.Show("3 Failed Logins System now shutdown, Please contact the System Administrator", "Login Error", MessageBoxButton.OK, MessageBoxImage.Error);
// Update the system logs if the login was unsucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = 1002,
EventTypeId = 1003,
EventDateTime = DateTime.Now,
EventData = $"System locked after 3 failed attempts for unknown user at { DateTime.Now} , using {userName} / {userPassword} combination"
});
// Exit the application
Close();
Environment.Exit(0);
}
}
}
else
{
// Display an error after 3 failed logins
MessageBox.Show("3 Failed Logins System now shutdown, Please contact the System Administrator", "Login Error", MessageBoxButton.OK, MessageBoxImage.Error);
// Update the system logs if the login was unsucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = 1002,
EventTypeId = 1003,
EventDateTime = DateTime.Now,
EventData = $"System locked after 3 failed attempts for unknown user at { DateTime.Now} , using {userName} / {userPassword} combination"
});
// Exit the application
Close();
Environment.Exit(0);
}
// If the user has been validated set up the mainDashboard and record the event in the logs
if (userValidated)
{
mainDashboard = new MainDashboard();
if (validatedUser != null)
{
mainDashboard.systemUser = validatedUser;
}
// Update the system logs if the login was sucessful
systemEventUtils.AddSystemEvent(new SystemEvent
{
UserId = validatedUser.UserId,
EventTypeId = 1,
EventDateTime = DateTime.Now,
EventData = $"UserName { validatedUser.Username} successfully logged on to the application at { DateTime.Now}"
});
mainDashboard.Owner = this;
mainDashboard.ShowDialog();
this.Hide();
}
}
