Reference method in 1.cs in 2.cs

[mcfly1204]

I have a Windows Form Application with all classes under the same namespace. I have 1.cs that contains a method title Login(). I create an instance of 2.cs which is a login window. Upon clicking a submit button on the login window, I would like to fire a Login(). How do I call Login() from the 2.cs? I have made Login() public, and I would assume that this would be a simple task, but I am at a loss. Thanks in advance.

**edit**
I am not used to working with Windows Forms, and as such, do not know how to properly call objects, in the same namespace, but in a different class. In 2.cs, do I create a new instance of the form on 1.cs, and then access the method as such. For example:

private void btnSubmit_Click(object sender, EventArgs e)
        {
            string userPassword = txtAdminPassword.Text;
            string adminPassword = AdminPassword();

            if (userPassword == adminPassword)
            {
                frmInkFormulas form = new frmInkFormulas();
                form.Login();

                this.Close();
            }
        }

[mcfly1204]

formname form1 = (formname)Application.OpenForms["formname"];
                form1.Login();

Where formname is the name of the form from 1.cs that contains the method I am attempting to call from the the form on 2.cs. Note that the method being called needs to be set to public.

[Christian Binder]

If you want to show a form before you're calling the Loin()-method , you have to call form.Show() before Line 9.
Or is there any other thing, that doesn't work well?

[mcfly1204]

The form I want to show is open in the background, so when I call this.close(), that form has the focus.