C# Application.Restart() 启动程序两次

Question

我遇到了一个奇怪的错误。我调用了 Application.Restart(); 方法，假设它将重新启动程序一次。但是，当我调用它时，它会重新启动并启动程序，而不是一次而是两次，从而在窗口上产生两种形式。为什么会这样？请帮忙!

这是我的代码:

Main.cs

 private void Login_Load(object sender, EventArgs e)
 {
     // DO some checkings here to see if setting is needed

     if (SettingIsNeeded)
     {
          SettingsForm Settings = new SettingsForm();
          Settings.Show();
     }
 }

SettingsForm.cs

    private void button1_Click(object sender, EventArgs e)
    {
        if (Settings.Default.COM != comboBox1.Text || Settings.Default.Gate_IP != textBox1.Text || Settings.Default.Server_Address != textBox2.Text) //Check if change has been made
        {
            Settings.Default.COM = comboBox1.Text;
            Settings.Default.Gate_IP = textBox1.Text;
            Settings.Default.Server_Address = textBox2.Text;
            Settings.Default.Save();
            settingschanged = true;
            this.Close();
        }
        settingschanged = false;
        this.Close();
    }

    private void COM_Settings_FormClosing(object sender, FormClosingEventArgs e)
    {
        if (settingschanged)
        {
            Application.Restart(); //This is where only the method will be called for restart.
        }
    }

Answer 1

我只是在这里猜测，但如果您尝试这样做会发生什么？

private bool isRestarted;

private void COM_Settings_FormClosing(object sender, FormClosingEventArgs e)
{
    if (settingschanged && !isRestarted)
    {
        isRestarted = true;
        Application.Restart(); //This is where only the method will be called for restart.
    }
}