private void TM_SignOut_Click(object sender, EventArgs e)
        {
            per = "out";
            TM_About.Enabled = TM_Accounts.Enabled = TM_Product.Enabled = TM_SB.Enabled = TM_Reports.Enabled = TM_SupAndCus.Enabled = TM_UserMang.Enabled = false;
            FRM_SignIn fs = new FRM_SignIn();

            fs.ShowDialog();
        }
        private void TM_SignIn_Click(object sender, EventArgs e)
        {
            FRM_SignIn si = new FRM_SignIn();

            si.ShowDialog();
        }