private void tsmi_QLNSTimKiem_Click(object sender, EventArgs e) { if (this.tableLP_Main.Controls[0].Name != "QLNS_TimKiem") { UCs.QLNS_TimKiem uc = new UCs.QLNS_TimKiem(); uc.Dock = DockStyle.Fill; UC = uc; this.tableLP_Main.Controls.Clear(); this.tableLP_Main.Controls.Add(UC, 0, 0); this.Text = "QUẢN LÝ NHÂN SỰ - TÌM KIẾM"; } }