private void chỉnhSửaThôngTinCáNhânToolStripMenuItem_Click(object sender, EventArgs e)
{
if (!CheckExitsForm("frm_SuaTKCaNhan"))
{
frm_SuaTKCaNhan STKCN = new frm_SuaTKCaNhan();
STKCN.MdiParent = this;
//STKCN.MdiParent = this;
STKCN.Show();
}
else ActiveChildForm("frm_SuaTKCaNhan");
}
