private void bubtnSettings_Click(object sender, EventArgs e)
 {
     ofrm_SettingMain           = new frm_SettingMain();
     ofrm_SettingMain.MdiParent = this;
     ofrm_SettingMain.Dock      = DockStyle.Fill;
     pnlfrm_AdminMain.Controls.Add(ofrm_SettingMain);
     ofrm_PatientsMain.Hide();
     ofrm_SettingMain.Show();
 }
        private void frm_AdminDeshboard_Load(object sender, EventArgs e)
        {
            this.MaximumSize = new System.Drawing.Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
            this.MinimumSize = new System.Drawing.Size(Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
            this.WindowState = FormWindowState.Maximized;
            MinimumSize      = MaximumSize = this.Size;
            this.SetDesktopBounds(0, 0, Width, Height);
            this.CenterToParent();

            ofrm_PatientsMain = new frm_PatientsMain();
            ofrm_SettingMain  = new frm_SettingMain();

            ofrm_AdminDashboard           = new frm_AdminDashboard();
            ofrm_AdminDashboard.MdiParent = this;
            ofrm_AdminDashboard.Dock      = DockStyle.Fill;
            pnlfrm_AdminMain.Controls.Add(ofrm_AdminDashboard);
            ofrm_AdminDashboard.Show();
        }