how to enable a form from another form
===

I created two forms: a login form, and a main form that is displayed when I start debugging.
when loading the main form the login form also loaded.
Now my question is, I want to disable the main form when the login form is loaded.
if the connection is successful, the main form must be enabled, otherwise it should be disabled.

I tried this code :

**MainFrm .cs :**

    private void Form1_Load(object sender, EventArgs e)
    {
    foreach (Control c in this.Controls)
    c.Enabled = false;
    Connectez ConnectezFrm = new Connectez { TopMost = true, Owner = this };
    ConnectezFrm.Show();
    }

**Connectez.cs :**

    private MainFrm objMainfrm { get; set; }
    public Connectez(MainFrm objfrm)
    {
    objMainfrm = objfrm;
    InitializeComponent();
    }
    ....
    ....
    private void simpleButton1_Click(object sender, EventArgs e)
    {
    foreach (Control c in objMainfrm.Controls)
    c.Enabled = true;
    this.Close();
    }

