private void lênLịchChiTiêuToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
FormKehoachchitieu lenlich = new FormKehoachchitieu();
lenlich.Show();
}
private void lênSựKiệnToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Hide();
FormKehoachchitieu kehoachchitieu = new FormKehoachchitieu();
kehoachchitieu.Show();
}