Question

我正在使用登录系统，我已经完全正常工作了。我从另一个网站获得了这段代码：

MessageBox.Show((found ? "Password" : "Username") + " incorrect")

但我不确定它的实际含义及其作用。

这是我的完整代码：

 namespace frmSplashScreen
{
    public partial class frmLogin : Form
    {
        public frmLogin()
        {
            InitializeComponent();
            StartPosition = FormStartPosition.CenterScreen;
        }

        int signUpPressed = 0;
        bool found = false;

        private void button1_Click(object sender, EventArgs e)
        {
            string[] userdetails = File.ReadAllLines(AppDomain.CurrentDomain.BaseDirectory + "UserDetails.txt");

            foreach (string user in userdetails)
            {
                string[] splitDetails = user.Split(':');
                Login.username = splitDetails[0];
                Login.password = splitDetails[1];

                if (txtUsername.Text == Login.username) 
                {
                    if (txtPassword.Text == Login.password)
                    {
                        MessageBox.Show("Welcome " + Login.username);
                        this.Hide();
                        frmMainMenu menu = new frmMainMenu();
                        menu.Show();
                        return; // we're done here, so return instead of break
                    }
                    found = true;
                    break; // we're not gonna find this username again, so might as well quit the loop
                }
            }
            MessageBox.Show((found ? "Password" : "Username") + " incorrect");
        }

非常感谢任何帮助，谢谢。

Answer 1

这是此代码的简短版本

var message = "";
if (found) {
  message = "Password "+ " incorrect";
} else {
  message = "Username "+ " incorrect";
}

MessageBox.Show(message)

这是什么意思：MessageBox.Show（（找到？“密码”：“用户名”）+“不正确”）？

1 个答案: