private void toolTimKiem_Click(object sender, EventArgs e) { frmTimPhieuNhap TimPhieu = new frmTimPhieuNhap(); Point p = PointToScreen(toolTimKiem.Bounds.Location); p.X += toolTimKiem.Width; p.Y += toolTimKiem.Height; TimPhieu.Location = p; TimPhieu.ShowDialog(); if (TimPhieu.DialogResult == DialogResult.OK) { ctrl.TimPhieuNhap(TimPhieu.cmbNCC.SelectedValue.ToString(), TimPhieu.dtNgayNhap.Value.Date); } }