public static void ShowFormChuyenLop()
{
if (m_frmChuyenLop == null || m_frmChuyenLop.IsDisposed)
{
m_frmChuyenLop = new frmChuyenLop();
m_frmChuyenLop.MdiParent = frmMain.ActiveForm;
m_frmChuyenLop.Show();
}
else
{
m_frmChuyenLop.Activate();
}
}
private void tsChuyenLop_Click(object sender, EventArgs e)
{
if (!CheckExistFrom("frmChuyenLop"))
{
frmChuyenLop frm = new frmChuyenLop();
frm.MdiParent = this;
frm.Show();
}
else
{
ActiveChildForm("frmChuyenLop");
}
}
