private void TKMenuItem_Click(object sender, EventArgs e)
{
PanelParent.Controls.Clear();
frmThongKe frm = new frmThongKe(PanelParent, this);
ShowForm(frm);
}
private void thongKeThuNhapToolStripMenuItem1_Click(object sender, EventArgs e)
{
//----!Đóng tất cả form con đang hiện ----
foreach (Form f in MdiChildren)
{
if (f.ShowInTaskbar)
{
f.Close();
}
}
if (kiemTraTrungForm("frmThongKe"))
{
frmThongKe fThongKe = new frmThongKe();
fThongKe.Name = "frmThongKe";
fThongKe.MdiParent = this;
fThongKe.Show();
}
}