private void menuItem12_Click(object sender, EventArgs e)
        {
            frmInstruments objfrmInstruments = new frmInstruments();

            objfrmInstruments.MdiParent = this;
            objfrmInstruments.FormMode = FormMode.Edit;
            objfrmInstruments.Show();
        }
        private void dgvMeasurements_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == dgvMeasurements.Columns["btnInstrumentColumn"].Index)
            {
                Measurement objMeasurement = dgvMeasurements.CurrentRow.DataBoundItem as Measurement;

                if (objMeasurement != null)
                {
                    frmInstruments objfrmInstruments = new frmInstruments(objMeasurement.InstrumentID);
                    objfrmInstruments.db = db;
                    objfrmInstruments.FormMode = FormMode.Select;
                    objfrmInstruments.ShowDialog();

                    if (objfrmInstruments.SelectedInstrument != null)
                    {
                        objMeasurement.InstrumentUsed = objfrmInstruments.SelectedInstrument;
                        dgvMeasurements.CurrentRow.Cells["btnInstrumentColumn"].Value = objMeasurement.InstrumentUsed.InstrumentID;
                    }

                }
            }
        }