private void btnXemDiem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
Form frm = this.CheckExists(typeof(frmXemDiem));
if (frm != null)
{
frm.Activate();
}
else
{
frmXemDiem f = new frmXemDiem();
f.MdiParent = this;
f.Show();
}
}
private void xemDiemToolStripMenuItem_Click(object sender, EventArgs e)
{
frmXemDiem frm = new frmXemDiem();
frm.Show();
}