private void insertMarksToolStripMenuItem_Click(object sender, EventArgs e) { if (ActiveMdiChild != null) //check if any other child form is open, if open then close // { ActiveMdiChild.Close(); } Frm_MarksCard objmkrcrd = new Frm_MarksCard(); objmkrcrd.MdiParent = this; objmkrcrd.Show(); clearhome(); }
// Update students marks// private void btn_Update_Click(object sender, EventArgs e) { if ((txtbx_regno.Text != "") && (cmb_sem.Text != "") && (cmb_sem.Text != "-- SEM --") && (Lbl_StuName.Text != "")) { Frm_MarksCard.flag1 = 1; if (ActiveMdiChild != null) { ActiveMdiChild.Close(); } Frm_MarksCardView.regno = txtbx_regno.Text; Frm_MarksCardView.sem = cmb_sem.Text; Frm_MarksCard objmkscd = new Frm_MarksCard(); objmkscd.MdiParent = this.ParentForm; objmkscd.Show(); this.Close(); } else { MessageBox.Show("Enter USN/Register Number and select Semester, to update."); } }