private void button7_Click(object sender, EventArgs e)
        {
            FormStaffManager fsm = new FormStaffManager(this);

            fsm.Show();
            this.Visible = false;
        }
        private void 员工管理ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            FormStaffManager fsm = new FormStaffManager(this);

            fsm.Show();
            this.Visible = false;
        }
 public FormInsertStaff(FormStaffManager f)
 {
     InitializeComponent();
     fsm = f;
 }