private void modifyStudentToolStripMenuItem_Click(object sender, EventArgs e)
        {
            frmStudentsList frmStdList = new frmStudentsList();

            frmStdList.MdiParent = this;
            frmStdList.Show();
        }
 private void modifyStudentToolStripMenuItem_Click(object sender, EventArgs e)
 {
     frmStudentsList frmStdList = new frmStudentsList();
     frmStdList.MdiParent = this;
     frmStdList.Show();
 }