Question

This question might sound simple but I can’t find the answer i’m looking for.
I have a Login_Form and a Main_Form.
Once I log into the Main_Form I just make it visible and I activate it because I don’t want my Login_Form to close.
My question is, is there a way to close both forms at the same time from the Main_Form?
The this.Close(); will only close the current form.

if (access)
{
    Main_Form mainForm = new Main_Form();
    mainForm.Visible = true;
    mainForm.Activate();
}

This is where I Instantiate the main_form how can I pass a reference to the login_form?
Thanks in advance and remember the Login_Form must remain open until I close it from the Main_Form!

Feedback

After looking at which of your answers I would use I found out about the Application.Close() Method Which closes all the forms. Should have taught about this before posting here thanks everyone.

Answer 1

If your Main form has a reference to the Login form you can call the close method on it. How you do that is up to you.

• You could pass the reference in to the Main from FROM the login form when you show it.
• You could keep a global reference to the Login Form. (think singleton)
• any other way you can think of

For example:

public class MainForm : Form
{
    Form loginform;
    public MainForm(Form loginForm)
    {
        this.loginForm = loginForm;
    }

    public void CloseForms()
    {
        loginForm.Close();
        this.Close();
    }
}

In your Active() method, just pass the login form in. Alternatively you can use the code above, and just pass this into the constructor instead of the Active() method.

public class MainForm : Form
{
    Form loginform;
    public Active(Form loginForm)
    {
        this.loginForm = loginForm;
    }

    public void CloseForms()
    {
        loginForm.Close();
        this.Close();
    }
}

//from the LOGIN form
if (access)
    {
        Main_Form mainForm = new Main_Form();
        mainForm.Visible = true;
         mainForm.Activate(this); //this is a reference to the current form. LOGIN in this case

     }