C＃中的表单关闭问题

Question

I have a Login Form that is checking roles on login time. If role is Normal User it is opening Form1 . If role is Register then it's opening Form2 . After opening Form1 or Form2 i am closing login form using this.close . When role is Normal User it's opening Form1 and Closing Login Form Perfectly while when role is Register it's closing both forms.

Here is the code.

if (ROLE != "Register")
{
    Form1 form1= new Form1();
    if (ROLE == "Normal User")
    {
        form1.Show();
        this.Close();
    }
    if (ROLE == "Bulk User")
    {
        form1.Show();
        this.Close();
    }
}
else
{
    Form2 form2= new Form2();
    form2.Show();
    this.Close();
}

Login Form and Form1 are WPF Forms While Form2 is a Windows Form

Answer 1

That's because second form gets disposed when parent form getting closed, You can do following

else
{
      Form2 form2 = new Form2();
      form2.Show();
      this.Hide();
      form2.Closed += (s, args) => this.Close();
}