private void btnOK_Click(object sender, EventArgs e)
{
try
{
//Record settings
SetupOp setupOp = UrbanDelineationExtension.Extension.Setup;
setupOp.GeometricNetwork = cbxNetwork.SelectedValue as IGeometricNetwork;
IFeatureLayer inletLayer = cbxInlets.SelectedValue as IFeatureLayer;
setupOp.InletClass = inletLayer == null ? null : inletLayer.FeatureClass;
setupOp.SmoothBoundaries = chkSmooth.Checked;
IRasterLayer demLayer = cbxDEM.SelectedValue as IRasterLayer;
setupOp.DEM = demLayer == null ? null : demLayer.Raster;
setupOp.IncludeUpstreamPipeEnds = chkIncludeUp.Checked;
setupOp.ExcludeDisabledNodes = chkExcludeDisabled.Checked;
setupOp.ExcludeDownstreamPipeEnds = chkExcludeDown.Checked;
IRasterLayer flowDirLayer = cbxFlowDirGrid.SelectedValue as IRasterLayer;
setupOp.FlowDirection = flowDirLayer == null ? null : flowDirLayer.Raster;
IFeatureLayer catchmentLayer = cbxCatchments.SelectedValue as IFeatureLayer;
setupOp.Catchments = catchmentLayer == null ? null : catchmentLayer.FeatureClass;
this.Close();
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message, Properties.Resources.Caption_Error);
}
}
protected override void OnShutdown()
{
if (_setupOp != null)
{
_setupOp.Dispose();
_setupOp = null;
}
}
private void SetupForm_Load(object sender, EventArgs e)
{
if (_document != null)
{
_SetupDocumentEvents();
}
_UpdateComboBoxes();
// Retrieve saved layers
List <ILayer> layers = _GetLayers(_document);
SetupOp setupOp = UrbanDelineationExtension.Extension.Setup;
if (setupOp.GeometricNetwork != null)
{
cbxNetwork.SelectedValue = setupOp.GeometricNetwork;
}
ILayer inletLayer = _FindFeatureLayer(setupOp.InletClass, layers);
if (inletLayer != null)
{
cbxInlets.SelectedValue = inletLayer;
}
chkSmooth.Checked = setupOp.SmoothBoundaries;
ILayer demLayer = _FindRasterLayer(setupOp.DEM, layers);
if (demLayer != null)
{
cbxDEM.SelectedValue = demLayer;
}
chkIncludeUp.Checked = setupOp.IncludeUpstreamPipeEnds;
chkExcludeDisabled.Checked = setupOp.ExcludeDisabledNodes;
chkExcludeDown.Checked = setupOp.ExcludeDownstreamPipeEnds;
ILayer flowDirLayer = _FindRasterLayer(setupOp.FlowDirection, layers);
if (flowDirLayer != null)
{
cbxFlowDirGrid.SelectedValue = flowDirLayer;
}
ILayer catchmentLayer = _FindFeatureLayer(setupOp.Catchments, layers);
if (catchmentLayer != null)
{
cbxCatchments.SelectedValue = catchmentLayer;
}
_UpdateButtons();
}
internal IFeatureClass RasterToPolygon(IRaster inputRaster, string outputName, string outputDir, bool smoothShapes)
{
IWorkspace workspace = SetupOp.OpenShapeFileWorkspace(outputDir);
IConversionOp conversionOp = new RasterConversionOpClass();
try
{
IFeatureWorkspace featureWorkspace = workspace as IFeatureWorkspace;
//Delete any existing
IEnumDatasetName datasets = workspace.get_DatasetNames(esriDatasetType.esriDTFeatureClass);
datasets.Reset();
IDataset existing = null;
IDatasetName datasetName = datasets.Next();
while (datasetName != null)
{
if (string.Compare(outputName, datasetName.Name, true) == 0)
{
existing = (IDataset)((IName)datasetName).Open();
break;
}
datasetName = datasets.Next();
}
if (existing != null)
{
try
{
existing.Delete();
}
finally
{
UrbanDelineationExtension.ReleaseComObject(existing);
}
}
//Convert to polygon feature
SetAnalysisEnvironment((IRasterAnalysisEnvironment)conversionOp);
IGeoDataset polygons = conversionOp.RasterDataToPolygonFeatureData((IGeoDataset)inputRaster, workspace, outputName, smoothShapes);
return((IFeatureClass)polygons);
}
finally
{
UrbanDelineationExtension.ReleaseComObject(workspace);
UrbanDelineationExtension.ReleaseComObject(conversionOp);
}
}
private void _PunchDEM()
{
OnProgress("Punching DEM with drainage points...");
IConversionOp conversionOp = new RasterConversionOpClass();
ILogicalOp logicalOp = new RasterMathOpsClass();
IGeoDataset inletLocations = null;
IWorkspace tempWorkspace = null;
try
{
tempWorkspace = GetTempRasterWorkspace();
SetAnalysisEnvironment((IRasterAnalysisEnvironment)conversionOp);
SetAnalysisEnvironment((IRasterAnalysisEnvironment)logicalOp);
IFeatureClassDescriptor sourceDescriptor = new FeatureClassDescriptorClass();
sourceDescriptor.Create(_drainClass, null, _drainClass.OIDFieldName);
string gridPath = SetupOp.CreateTempFileName(_GetTempDir(), "TmpInlets", null);
string gridName = System.IO.Path.GetFileName(gridPath);
IRasterDataset pRasterDataset = null;
try
{
pRasterDataset = conversionOp.ToRasterDataset((IGeoDataset)sourceDescriptor, "GRID", tempWorkspace, gridName);
inletLocations = logicalOp.BooleanNot(logicalOp.IsNull((IGeoDataset)pRasterDataset));
string outputPath = CreateTempFileName(_GetResultDir(), "punchdem", "");
_punchedDEM = GeoprocessingTools.SetNull((IRaster)inletLocations, _dem, outputPath);
}
finally
{
_MarkForDisposal((IDataset)pRasterDataset);
}
}
finally
{
UrbanDelineationExtension.ReleaseComObject(tempWorkspace);
UrbanDelineationExtension.ReleaseComObject(conversionOp);
UrbanDelineationExtension.ReleaseComObject(logicalOp);
}
OnProgress("DEM punched.");
}
private IRaster _DrainagePointsToSeedGrid(IFeatureClass featureClass, string baseName, string valueField)
{
Geoprocessor gp = new Geoprocessor();
bool addOutputs = gp.AddOutputsToMap;
try
{
IRasterDataset demRasterDataset = ((IRasterAnalysisProps)DEM).RasterDataset;
IDataset demDataset = (IDataset)demRasterDataset;
string path = System.IO.Path.Combine(demDataset.Workspace.PathName, demDataset.Name);
gp.SetEnvironmentValue("snapRaster", path);
string extent = string.Format("{0} {1} {2} {3}", ((IGeoDataset2)demRasterDataset).Extent.XMin, ((IGeoDataset2)demRasterDataset).Extent.YMin, ((IGeoDataset2)demRasterDataset).Extent.XMax, ((IGeoDataset2)demRasterDataset).Extent.YMax);
gp.SetEnvironmentValue("extent", extent);
gp.AddOutputsToMap = false;
FeatureToRaster featureToRasterTool = new FeatureToRaster();
featureToRasterTool.cell_size = ((IRasterAnalysisProps)DEM).PixelHeight;
featureToRasterTool.field = valueField;
IDataset dataset = (IDataset)featureClass;
string featureClassPath = System.IO.Path.Combine(dataset.Workspace.PathName, dataset.Name + ".shp");
featureToRasterTool.in_features = featureClassPath;
string outputName = SetupOp.CreateTempFileName(this.ScratchDirectory, baseName, null);
featureToRasterTool.out_raster = outputName;
string outputShortName = System.IO.Path.GetFileNameWithoutExtension(outputName);
RunTool(gp, featureToRasterTool, null);
IRasterWorkspace rws = this.GetTempRasterWorkspace() as IRasterWorkspace;
return(rws.OpenRasterDataset(outputShortName).CreateDefaultRaster());
}
finally
{
gp.AddOutputsToMap = addOutputs;
}
}
private void _DelineateInletCatchments()
{
OnProgress("Delineating inlet catchments...");
//Determine output path
string outputDir = _GetResultDir();
string outputPathSmooth = SetupOp.CreateTempFileName(outputDir, "Catchments_smooth", ".shp");
string outputPathDetailed = SetupOp.CreateTempFileName(outputDir, "Catchments_detailed", ".shp");
string outputNameSmooth = System.IO.Path.GetFileNameWithoutExtension(outputPathSmooth);
string outputNameDetailed = System.IO.Path.GetFileNameWithoutExtension(outputPathDetailed);
//Calculate catchments
IHydrologyOp hydroOp = new RasterHydrologyOpClass();
IGeoDataset seedGrid = null;
IGeoDataset catchmentGrid = null;
try
{
SetAnalysisEnvironment((IRasterAnalysisEnvironment)hydroOp);
seedGrid = (IGeoDataset)_DrainagePointsToSeedGrid(_drainClass, "SeedPts", SetupOp.EID_FIELD_NAME);
catchmentGrid = hydroOp.Watershed((IGeoDataset)_flowDir, seedGrid);
OnProgress("Converting catchments to polygon...");
IFeatureClass smoothCatchmentClass = RasterToPolygon(catchmentGrid, outputNameSmooth, outputDir, true);
IFeatureClass detailedCatchmentClass = RasterToPolygon(catchmentGrid, outputNameDetailed, outputDir, false);
if (_smooth)
{
_catchmentClass = smoothCatchmentClass;
}
else
{
_catchmentClass = detailedCatchmentClass;
}
_MarkForDisposal((IDataset)seedGrid);
_MarkForDisposal(catchmentGrid as IDataset);
}
finally
{
UrbanDelineationExtension.ReleaseComObject(hydroOp);
}
OnProgress("Inlet catchments delineated.");
}
private IEnvelope _GetSurfaceOutputExtent(IPoint mapPoint)
{
IEnvelope extent = null;
SetupOp setupOp = UrbanDelineationExtension.Extension.Setup;
if (setupOp.Catchments != null)
{
// Find all inlet catchments that intersect any source feature and union envelopes
IFeatureCursor catchCursor = setupOp.Catchments.Search(null, false);
try
{
IFeature catchment = catchCursor.NextFeature();
while (catchment != null)
{
try
{
IRelationalOperator relationOp = (IRelationalOperator)catchment.Shape;
if (!relationOp.Disjoint(mapPoint))
{
extent = new EnvelopeClass();
catchment.Extent.QueryEnvelope(extent);
break;
}
}
finally
{
UrbanDelineationExtension.ReleaseComObject(catchment);
}
catchment = catchCursor.NextFeature();
}
}
finally
{
UrbanDelineationExtension.ReleaseComObject(catchCursor);
}
}
return(extent);
}
private void _DelineateInletCatchments()
{
OnProgress("Delineating inlet catchments...");
//Determine output path
string outputDir = _GetResultDir();
string outputPathSmooth = SetupOp.CreateTempFileName(outputDir, "Catchments_smooth", ".shp");
string outputPathDetailed = SetupOp.CreateTempFileName(outputDir, "Catchments_detailed", ".shp");
string outputNameSmooth = System.IO.Path.GetFileNameWithoutExtension(outputPathSmooth);
string outputNameDetailed = System.IO.Path.GetFileNameWithoutExtension(outputPathDetailed);
//Calculate catchments
IRaster seedGrid = _DrainagePointsToSeedGrid(_drainClass, "SeedPts", SetupOp.EID_FIELD_NAME);
string watershedPath = CreateTempFileName(_GetTempDir(), "inletws", "");
IRaster catchmentGrid = GeoprocessingTools.Watershed(_flowDir, seedGrid, watershedPath);
OnProgress("Converting catchments to polygon...");
IFeatureClass smoothCatchmentClass = RasterToPolygon(catchmentGrid, outputNameSmooth, outputDir, true);
IFeatureClass detailedCatchmentClass = RasterToPolygon(catchmentGrid, outputNameDetailed, outputDir, false);
if (_smooth)
{
_catchmentClass = smoothCatchmentClass;
}
else
{
_catchmentClass = detailedCatchmentClass;
}
var seedDataset = ((IRasterAnalysisProps)seedGrid).RasterDataset;
_MarkForDisposal((IDataset)seedDataset);
var catchmentDataset = ((IRasterAnalysisProps)catchmentGrid).RasterDataset;
_MarkForDisposal(catchmentGrid as IDataset);
OnProgress("Inlet catchments delineated.");
}
//TODO: Implement load and save
protected override void OnLoad(Stream inStrm)
{
SetupOp setupOp = null;
try
{
// NOTE: Do not close or dispose BinaryReader, as this will close the Stream
BinaryReader reader = new BinaryReader(inStrm);
int version = reader.ReadInt32();
// NOTE: With change to Add-In architecture, this extension is NOT backwards compatible with versions 1 and 2
if (version == 3)
{
//// Version 3:
//// Item 1: FeatureClassName: The orphan junction feature class of the Geometric Network for the underground conveyance system.
//// Item 2: FeatureClassName: The inlet feature class
//// Item 3: RasterDatasetName: The DEM dataset
//// Item 4: Boolean: Whether to smooth boundaries
//// Item 5: Boolean: Whether to include upstream pipe ends
//// Item 6: Boolean: Whether to exclude downstream pipe ends
//// Item 7: RasterDatasetName: The flow direction dataset
//// Item 8: FeatureClassName: The catchment feature class
//// Item 9: Boolean: Whether to exclude disabled nodes
setupOp = new SetupOp();
setupOp.ResultsDirectory = this.MxDocDirectoryName;
setupOp.ScratchDirectory = this.TemporaryDirectory;
FeatureClassName networkJunctionName = null;
PersistenceHelper.Load <FeatureClassName>(inStrm, ref networkJunctionName);
INetworkClass junctionClass = _SafeOpen(networkJunctionName) as INetworkClass;
if (junctionClass != null)
{
setupOp.GeometricNetwork = junctionClass.GeometricNetwork;
}
FeatureClassName inletClassName = null;
PersistenceHelper.Load <FeatureClassName>(inStrm, ref inletClassName);
setupOp.InletClass = _SafeOpen(inletClassName) as IFeatureClass;
RasterDatasetName demName = null;
PersistenceHelper.Load <RasterDatasetName>(inStrm, ref demName);
IRasterDataset demDataset = _SafeOpen(demName) as IRasterDataset;
if (demDataset != null)
{
setupOp.DEM = demDataset.CreateDefaultRaster();
}
setupOp.SmoothBoundaries = reader.ReadBoolean();
setupOp.IncludeUpstreamPipeEnds = reader.ReadBoolean();
setupOp.ExcludeDownstreamPipeEnds = reader.ReadBoolean();
RasterDatasetName flowDirName = null;
PersistenceHelper.Load <RasterDatasetName>(inStrm, ref flowDirName);
IRasterDataset flowDirDataset = _SafeOpen(flowDirName) as IRasterDataset;
if (flowDirDataset != null)
{
setupOp.FlowDirection = flowDirDataset.CreateDefaultRaster();
}
FeatureClassName catchmentClassName = null;
PersistenceHelper.Load <FeatureClassName>(inStrm, ref catchmentClassName);
setupOp.Catchments = _SafeOpen(catchmentClassName) as IFeatureClass;
setupOp.ExcludeDisabledNodes = reader.ReadBoolean();
}
_setupOp = setupOp;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.GetType().FullName + ": " + ex.Message);
}
}
private void _ClearProject()
{
// A null setup object indicates this document has not been used for catchment delineation
_setupOp = null;
}
protected override void OnMouseUp(MouseEventArgs arg)
{
base.OnMouseUp(arg);
IMxDocument document = null;
try
{
// Get user point
document = ArcMap.Document;
IPoint mapPoint = ArcMap.ThisApplication.Display.DisplayTransformation.ToMapPoint(arg.X, arg.Y);
// Get flow direction
SetupOp setupOp = UrbanDelineationExtension.Extension.Setup;
IRaster flowDir = setupOp.FlowDirection;
if (flowDir == null)
{
MessageBox.Show(_appWindow, Properties.Resources.Error_NoFlowDirection, Properties.Resources.Category_UrbanDelineation);
return;
}
IGeoDataset flowDirDataset = (IGeoDataset)flowDir;
// Process point
IPointCollection pointCollection = new MultipointClass();
((IGeometry)pointCollection).SpatialReference = flowDirDataset.SpatialReference;
mapPoint.Project(flowDirDataset.SpatialReference);
IPoint[] points = new IPoint[] { mapPoint };
pointCollection.AddPoints(1, ref points[0]);
// Get flow path geometry
IPolyline flowPath = null;
string outputDir = null;
IDistanceOp distanceOp = new RasterDistanceOpClass();
try
{
IEnvelope outputExtent = _GetSurfaceOutputExtent(mapPoint);
if (outputExtent == null)
{
setupOp.SetAnalysisEnvironment((IRasterAnalysisEnvironment)distanceOp);
}
else
{
// Expand to ensure full boundary of watershed is included.
double cellWidth = ((IRasterAnalysisProps)setupOp.FlowDirection).PixelWidth;
double cellHeight = ((IRasterAnalysisProps)setupOp.FlowDirection).PixelHeight;
outputExtent.Expand(cellWidth * 3.0, cellHeight * 3.0, false);
setupOp.SetAnalysisEnvironment((IRasterAnalysisEnvironment)distanceOp, outputExtent);
}
// The RasterDistanceOpClass does not properly clean up after itself, so we have to do it ourselves
// To do this, we need to track the output directory and delete it, since we don't have direct access to the
// dataset that is left behind. To delete the directory, it must contain only the temp files generated by
// the RasterDistanceOpClass and no others, so we create one here. The directory is then deleted in the
// finally clause.
((IRasterAnalysisEnvironment)distanceOp).OutWorkspace = _GetUniqueOutputWorkspace();
outputDir = ((IRasterAnalysisEnvironment)distanceOp).OutWorkspace.PathName;
IGeometryCollection flowPaths = distanceOp.CostPathAsPolyline(pointCollection, flowDirDataset, flowDirDataset);
if (flowPaths.GeometryCount > 0)
{
flowPath = flowPaths.get_Geometry(0) as IPolyline;
}
}
finally
{
UrbanDelineationExtension.ReleaseComObject(distanceOp);
try
{
if (Directory.Exists(outputDir))
{
Directory.Delete(outputDir, true);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("FlowTracingTool.OnMouseUp: " + ex.GetType().FullName + ": " + ex.Message);
}
}
// Add flow path to map
if (flowPath != null && !flowPath.IsEmpty)
{
// Create graphic element
flowPath.SpatialReference = flowDirDataset.SpatialReference;
// Weed removes points that are in-line since flow path is generated with vertices for every cell, even if they are exactly in-line
((IPolycurve)flowPath).Weed(0.001);
IElement flowElement = new LineElementClass();
((IElementProperties3)flowElement).Name = ELEMENT_NAME;
flowElement.Geometry = flowPath;
// Set color
ILineSymbol lineSymbol = ((ILineElement)flowElement).Symbol;
IRgbColor color = lineSymbol.Color as IRgbColor;
Color systemColor = Color.Red;
color.Blue = systemColor.B;
color.Red = systemColor.R;
color.Green = systemColor.G;
lineSymbol.Color = color;
((ILineElement)flowElement).Symbol = lineSymbol;
((IGraphicsContainer)document.FocusMap.BasicGraphicsLayer).AddElement(flowElement, 0);
((IDocumentDirty)document).SetDirty();
document.ActiveView.Refresh();
}
}
catch (Exception ex)
{
MessageBox.Show(_appWindow, ex.Message, Properties.Resources.Caption_Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
UrbanDelineationExtension.ReleaseComObject(document);
}
}
private void btnPreprocess_Click(object sender, EventArgs e)
{
try
{
System.Windows.Forms.Application.DoEvents();
System.Windows.Forms.Cursor.Current = Cursors.WaitCursor;
DialogResult choice = MessageBox.Show(this, "Depending on the size of the network and DEM, this operation may take a long time.",
Properties.Resources.Caption_Notice, MessageBoxButtons.OKCancel, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1);
if (choice == DialogResult.OK)
{
SetupOp setupOp = UrbanDelineationExtension.Extension.Setup;
setupOp.GeometricNetwork = cbxNetwork.SelectedValue as IGeometricNetwork;
IFeatureLayer inletLayer = cbxInlets.SelectedValue as IFeatureLayer;
setupOp.InletClass = inletLayer.FeatureClass;
IRasterLayer demLayer = cbxDEM.SelectedValue as IRasterLayer;
setupOp.DEM = demLayer.Raster;
setupOp.IncludeUpstreamPipeEnds = chkIncludeUp.Checked;
setupOp.ExcludeDisabledNodes = chkExcludeDisabled.Checked;
setupOp.ExcludeDownstreamPipeEnds = chkExcludeDown.Checked;
setupOp.SmoothBoundaries = chkSmooth.Checked;
setupOp.Preprocess();
//Add results to map
EnumLayer layers = new EnumLayer();
IFeatureLayer drainLayer = new FeatureLayerClass();
drainLayer.FeatureClass = setupOp.DrainagePoints;
drainLayer.Name = "Drainage Points";
drainLayer.Visible = false;
layers.Add(drainLayer);
IRasterLayer punchedLayer = new RasterLayerClass();
punchedLayer.CreateFromRaster(setupOp.PunchedDEM);
punchedLayer.Name = "Punched DEM";
punchedLayer.Visible = false;
layers.Add(punchedLayer);
IRasterLayer fillLayer = new RasterLayerClass();
fillLayer.CreateFromRaster(setupOp.FilledDEM);
fillLayer.Name = "Filled DEM";
fillLayer.Visible = false;
layers.Add(fillLayer);
IRasterLayer flowDirLayer = new RasterLayerClass();
flowDirLayer.CreateFromRaster(setupOp.FlowDirection);
flowDirLayer.Name = "Flow Direction";
flowDirLayer.Visible = false;
layers.Add(flowDirLayer);
IFeatureLayer catchmentLayer = new FeatureLayerClass();
catchmentLayer.FeatureClass = setupOp.Catchments;
catchmentLayer.Name = "Inlet Catchments";
catchmentLayer.Visible = false;
((ILayerEffects)catchmentLayer).Transparency = 50;
layers.Add(catchmentLayer);
IMap map = null;
try
{
map = ArcMap.Document.FocusMap;
map.AddLayers(layers, true);
cbxFlowDirGrid.SelectedValue = flowDirLayer;
cbxCatchments.SelectedValue = catchmentLayer;
}
finally
{
UrbanDelineationExtension.ReleaseComObject(map);
}
}
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message, Properties.Resources.Caption_Error);
}
finally
{
System.Windows.Forms.Cursor.Current = Cursors.Default;
}
}
private bool _CheckInput()
{
SetupOp pSetupOp = UrbanDelineationExtension.Extension.Setup;
if (pSetupOp.GeometricNetwork == null)
{
MessageBox.Show(this, "The drainaige network has not been specified. Please check the setup and try again.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
if (pSetupOp.InletClass == null)
{
MessageBox.Show(this, "The inlet node layer has not been specified. Please check the setup and try again.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
if (cbxOutletSource.SelectedValue == null || chkExtendOverland.Checked)
{
if (pSetupOp.Catchments == null)
{
MessageBox.Show(this, "The preprocessed inlet catchments have not been calculated. Please check the setup and try again.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
}
if (chkSnapToPourPoint.Enabled && chkSnapToPourPoint.Checked)
{
double snapDistance;
if (!double.TryParse(tbxSnapDistance.Text, out snapDistance))
{
MessageBox.Show(this, "The snap distance has not been specified, or is not a valid number. Please check the snap distance.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
else
{
if (snapDistance <= 0)
{
MessageBox.Show(this, "The snap distance is less than or equal to zero. Please enter a value greater than zero.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
}
}
IFeatureLayer sourceLayer = cbxOutletSource.SelectedValue as IFeatureLayer;
if (sourceLayer != null)
{
if (pSetupOp.FlowDirection == null)
{
MessageBox.Show(this, "The flow direction layer has not been specified. Please check the setup and try again.", Properties.Resources.Caption_InvalidEntry, MessageBoxButtons.OK, MessageBoxIcon.Warning);
return(false);
}
if (((IFeatureSelection)sourceLayer).SelectionSet.Count == 0)
{
DialogResult userResponse = MessageBox.Show(this, "There are no features selected in the chosen source feature layer. Are you sure you want to delineate from all features in the feature layer?", "No Selection", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2);
if (userResponse != DialogResult.Yes)
{
return(false);
}
}
}
return(true);
}