switching the visibility of a menuStrip on a different form on and off

Hi,

I have two windows forms in a C# application. One called frmMessages and the second frmAdmin.

On the frmMessage form I have a menu called moveToToolStripMenuItem, which I need to make invisible from frmAdmin.

That was achieved using the code below. However, another problem crept up. Every time  frmMessage is re-loaded the menuStrip is
back to its original position. So, what I really need is to keep the strip invisible until switched to visible and, when switched to visible, stays visible until switched to invisible.

I created the following public method  on frmMessages:

public void ShowHideMenu()
        {
             this.Visible = true;
            ToolStripMenuItem item = new ToolStripMenuItem();
            item = this.moveToToolStripMenuItem;
           
            if (item.Visible == true)
            {
                item.Visible = false;
            }
           
        }

In frmAdmin I created a button that calls the above method:

 private void button1_Click(object sender, EventArgs e)
            {
             
                frmMessage Frm = new frmMessage();
                Frm.ShowHideMenu();

            }

Please advise. Thank you.