BesAsm.Swsp.PacSizingTool.Form1.ValidateFacility C# (CSharp) Метод

        private Facility ValidateFacility(string hierarchy, string facilityType, string configuration)
        {
            try
              {
              //Read catchment parameters to local variables
              double imperviousArea = Convert.ToDouble(txtImperviousArea.Text);
              double curveNumber = Convert.ToDouble(txtCurveNumber.Text);
              double preCurveNumber = Convert.ToDouble(txtPreCurveNumber.Text);
              double timeOfConcentration = Convert.ToDouble(txtTimeOfConcentration.Text);
              double nativeInfiltrationRate = Convert.ToDouble(txtNativeSoilInfiltrationRate.Text);
              InfiltrationTestType infiltrationTestType;

              switch (cmbInfiltrationProcedure.SelectedIndex)
              {
              case (0):
                  infiltrationTestType = InfiltrationTestType.OpenPitFallingHead;
                  break;
              case (1):
                  infiltrationTestType = InfiltrationTestType.EncasedFallingHead;
                  break;
              case (2):
                  infiltrationTestType = InfiltrationTestType.DoubleRingInfiltometer;
                  break;
              default:
                  infiltrationTestType = InfiltrationTestType.OpenPitFallingHead;
                  break;
              }

              //Create catchment object local variables
              Catchment catchment = new Catchment("Catchment A")
              {
              ImperviousAreaSquareFeet = imperviousArea,
              AcceptableSeparationFromGroundwater = chkMeetsGroundwaterRequirements.Checked,
              CurveNumber = curveNumber,
              TimeOfConcentrationMinutes = timeOfConcentration,
              TestedInfiltrationRateInchesPerHour = nativeInfiltrationRate,
              InfiltrationTestType = infiltrationTestType
              };

              //Read facility parameters to local variables
              double bottomArea = Convert.ToDouble(txtBottomArea.Text);
              double bottomWidth = Convert.ToDouble(txtBottomWidth.Text);
              double sideSlope = Convert.ToDouble(txtSideSlope.Text);
              double storageDepth1 = Convert.ToDouble(txtStorageDepth1.Text);
              double storageDepth2 = Convert.ToDouble(txtStorageDepth2.Text);
              double storageDepth3 = Convert.ToDouble(txtStorageDepth3.Text);
              double growingMediumDepth = Convert.ToDouble(txtGrowingMediumDepth.Text);
              double freeboardDepth = Convert.ToDouble(txtFreeboardDepth.Text);
              double rockStorageDepth = Convert.ToDouble(txtRockStorageDepth.Text);
              double rockStorageVoidRatio = Convert.ToDouble(txtRockVoidRatio.Text);
              double rockStorageBottomArea = Convert.ToDouble(txtRockStorageBottomArea.Text);
              double surfaceAreaAtStorageDepth1 = Convert.ToDouble(txtSurfaceAreaAtDepth1.Text);
              double bottomPerimiterLength = Convert.ToDouble(txtBottomPerimeterLength.Text);
              double surfaceAreaAtStorageDepth2 = Convert.ToDouble(txtSurfaceAreaAtDepth2.Text);
              FacilityShape shape = GetFacilityShape(cmbFacilityShape.Text);

              FacilityConfiguration config;
              config = (FacilityConfiguration)cmbFacilityConfiguration.Text[0];
              FacilityType type = GetFacilityType(cmbFacilityType.Text);

              Facility facility;

              if (type == FacilityType.Basin || type == FacilityType.PlanterFlat)
              {
              facility = new Facility(type, config, catchment)
              {
                  BottomAreaSqFt = bottomArea,
                  BottomWidthFt = bottomWidth,
                  SideSlopeRatio = sideSlope,
                  StorageDepth1In = storageDepth1,
                  StorageDepth2In = storageDepth2,
                  StorageDepth3In = storageDepth3,
                  GrowingMediumDepthIn = growingMediumDepth,
                  FreeboardIn = freeboardDepth,
                  RockStorageDepthIn = rockStorageDepth,
                  RockVoidRatio = rockStorageVoidRatio,
                  RockStorageBottomAreaSqFt = rockStorageBottomArea,
                  SurfaceAreaAtStorageDepth1SqFt = surfaceAreaAtStorageDepth1,
                  BottomPerimeterLengthFt = bottomPerimiterLength,
                  SurfaceAreaAtStorageDepth2SqFt = surfaceAreaAtStorageDepth2,
                  Shape = shape
              };
              }
              else //Write sloped facility parameters from UI to facility object and verify results
              {
              //ShowSlopedFacilityWS();
              List<SlopedFacilitySegment> segments;
              if (_sfws != null)
              {
                  if (_sfws.Segments != null)
                      segments = _sfws.Segments;
                  else
                      segments = new List<SlopedFacilitySegment>();
              }
              else
                  segments = new List<SlopedFacilitySegment>();

              facility = new SlopedFacility(type, config, catchment, segments)
              {
                  BottomAreaSqFt = bottomArea,
                  BottomWidthFt = bottomWidth,
                  SideSlopeRatio = sideSlope,
                  StorageDepth1In = storageDepth1,
                  StorageDepth2In = storageDepth2,
                  StorageDepth3In = storageDepth3,
                  GrowingMediumDepthIn = growingMediumDepth,
                  FreeboardIn = freeboardDepth,
                  RockStorageDepthIn = rockStorageDepth,
                  RockVoidRatio = rockStorageVoidRatio,
                  RockStorageBottomAreaSqFt = rockStorageBottomArea,
                  SurfaceAreaAtStorageDepth1SqFt = surfaceAreaAtStorageDepth1,
                  Shape = shape
              };
              }

            int hierarchyNumber = Convert.ToInt32(hierarchy);
            HierarchyCategory hierarchyCategory = (HierarchyCategory)hierarchyNumber;

            string message;
            _validFacility = Facility.Validate(facility, hierarchyNumber, out message);

            ToggleUIParameters(facility);
            if (!_validFacility)
            DisableUI(message);

            return facility;
              }
              catch (Exception ex)
              {
            MessageBox.Show("Error with facility parameters: " + ex.Message);
            return null;
              }
        }