Exemplo n.º 1
0
        private void loginButton_Click(object sender, EventArgs e)
        {
            errorLabel.Text     = "Logging in...";
            errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);

            if (usernameBox.TextLength > 0 && passwordBox.TextLength > 0)
            {
                if (sql.isServerConnected())
                {
                    if (sql.findPass(usernameBox.Text) != "")
                    {
                        try
                        {
                            // Searches for username entered and then decrypts password from database file
                            string decryptedPassword = StringCipher.Decrypt(sql.findPass(usernameBox.Text), key);

                            // Checks decrypted password against password entered
                            if (decryptedPassword == passwordBox.Text)
                            {
                                username = usernameBox.Text;
                                MainWindow main = new MainWindow();
                                main.username = username;
                                Hide();
                                main.Show();
                            }
                            else
                            {
                                errorLabel.Text     = "Wrong username or password!";
                                errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);
                            }
                        }
                        catch (MySqlException ex)
                        {
                            errorLabel.Text     = ex.Message;
                            errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);
                        }
                    }
                    else
                    {
                        errorLabel.Text     = "Wrong username or password!";
                        errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);
                    }
                }
                else
                {
                    errorLabel.Text     = "No connection to database";
                    errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);
                }
            }
            else
            {
                errorLabel.Text     = "Username or password field empty";
                errorLabel.Location = new Point((ActiveForm.Width - errorLabel.Width) / 2, passwordBox.Location.Y + passwordBox.Height + 13);
            }
        }