private void tsNhapDiem_Click_1(object sender, EventArgs e)
{
if (!CheckExistFrom("frmNhapDiem"))
{
frmNhapDiem frm = new frmNhapDiem();
frm.MdiParent = this;
frm.Show();
}
else
{
ActiveChildForm("frmNhapDiem");
}
}
private void btnNhapDiem_ItemClick(object sender, ItemClickEventArgs e)
{
Form frm = this.CheckExists(typeof(frmNhapDiem));
if (frm != null)
{
frm.Activate();
}
else
{
frmNhapDiem f = new frmNhapDiem();
f.MdiParent = this;
f.Show();
}
}