private void FillExistingGrid()
        {
            gridMedExisting.BeginUpdate();
            gridMedExisting.ListGridColumns.Clear();
            GridColumn col = new GridColumn("Last Modified", 100, HorizontalAlignment.Center);

            gridMedExisting.ListGridColumns.Add(col);
            col = new GridColumn("Date Start", 100, HorizontalAlignment.Center);
            gridMedExisting.ListGridColumns.Add(col);
            col = new GridColumn("Date Stop", 100, HorizontalAlignment.Center);
            gridMedExisting.ListGridColumns.Add(col);
            col = new GridColumn("Description", 320);
            gridMedExisting.ListGridColumns.Add(col);
            gridMedExisting.ListGridRows.Clear();
            _listMedicationPatCur = MedicationPats.GetMedPatsForReconcile(_patCur.PatNum);
            List <long> medicationNums = new List <long>();

            for (int h = 0; h < _listMedicationPatCur.Count; h++)
            {
                if (_listMedicationPatCur[h].MedicationNum > 0)
                {
                    medicationNums.Add(_listMedicationPatCur[h].MedicationNum);
                }
            }
            _listMedicationCur = Medications.GetMultMedications(medicationNums);
            GridRow    row;
            Medication med;

            for (int i = 0; i < _listMedicationPatCur.Count; i++)
            {
                row = new GridRow();
                med = Medications.GetMedication(_listMedicationPatCur[i].MedicationNum);              //Possibly change if we decided to postpone caching medications
                row.Cells.Add(_listMedicationPatCur[i].DateTStamp.ToShortDateString());
                if (_listMedicationPatCur[i].DateStart.Year < 1880)
                {
                    row.Cells.Add("");
                }
                else
                {
                    row.Cells.Add(_listMedicationPatCur[i].DateStart.ToShortDateString());
                }
                if (_listMedicationPatCur[i].DateStop.Year < 1880)
                {
                    row.Cells.Add("");
                }
                else
                {
                    row.Cells.Add(_listMedicationPatCur[i].DateStop.ToShortDateString());
                }
                if (med.MedName == null)
                {
                    row.Cells.Add("");
                }
                else
                {
                    row.Cells.Add(med.MedName);
                }
                gridMedExisting.ListGridRows.Add(row);
            }
            gridMedExisting.EndUpdate();
        }