/// <summary>
/// GetTraversalResultLayer will generate a layer out of the traversal result for the specified element type
/// </summary>
private IFeatureLayer GetTraversalResultLayer(esriNetworkElementType elementType, INATraversalResultQuery2 naTraversalResultQuery)
{
//Junctions Traversal Result Feature Layer
IFeatureClass traversalResultFeatureClass = naTraversalResultQuery.get_FeatureClass(elementType);
if (traversalResultFeatureClass != null)
{
// save the rows in this class out when the MXD is saved
INAClass naClass = traversalResultFeatureClass as INAClass;
naClass.SaveRowsOnPersist = true;
// create the traversal result layer
IFeatureLayer traversalResultLayer = new FeatureLayerClass();
traversalResultLayer.FeatureClass = traversalResultFeatureClass;
traversalResultLayer.Name = traversalResultFeatureClass.AliasName;
// Set up the layer with an appropriate symbology
var geoFeatureLayer = traversalResultLayer as IGeoFeatureLayer;
geoFeatureLayer.RendererPropertyPageClassID = (new SingleSymbolPropertyPageClass()).ClassID;
geoFeatureLayer.Renderer = GetRenderer(elementType);
return(traversalResultLayer);
}
return(null);
}
/// <summary>
/// 清除路径和图层信息
/// </summary>
private void menuEndRoute_Click(object sender, EventArgs e)
{
//解决完后，删除图层内容
ITable pTable_inputFClass = pPathFinder.inputFClass as ITable;
pTable_inputFClass.DeleteSearchedRows(null);
//删除上一次路径route网络上下文
IFeatureClass routesFC;
routesFC = pPathFinder.m_NAContext.NAClasses.get_ItemByName("Routes") as IFeatureClass;
ITable pTable1 = routesFC as ITable;
pTable1.DeleteSearchedRows(null);
//删除上一次路径Stops网络上下文
INAClass stopsNAClass = pPathFinder.m_NAContext.NAClasses.get_ItemByName("Stops") as INAClass;
ITable ptable2 = stopsNAClass as ITable;
ptable2.DeleteSearchedRows(null);
//删除上一次barries网络上下文
INAClass barriesNAClass = pPathFinder.m_NAContext.NAClasses.get_ItemByName("Barriers") as INAClass;
ITable pTable3 = barriesNAClass as ITable;
pTable3.DeleteSearchedRows(null);
pPathFinder.PGC.DeleteAllElements();
pPathFinder.clickedcount = 0;
axMapControl1.Refresh();
}
public static bool AddLocation(INALayer layer, string locationClassName, IPoint point, string locationName,
StringObjectDictionary locationProperties, double tolerance)
{
INALocator locator = layer.Context.Locator;
locator.SnapTolerance = tolerance;
INALocation location = null;
IPoint outPoint = null;
double distanceFromPoint = 0.0;
locator.QueryLocationByPoint(point, ref location, ref outPoint, ref distanceFromPoint);
INAClass class2 = layer.Context.NAClasses.get_ItemByName(locationClassName) as INAClass;
IFeatureClass class3 = class2 as IFeatureClass;
IFeature feature = class3.CreateFeature();
feature.Shape = point;
int num2 = class3.FeatureCount(null);
int index = -1;
IClass class4 = class3;
INALocationObject obj2 = feature as INALocationObject;
obj2.NALocation = location;
index = class4.FindField(NetworkConstants.NAME_FIELD);
if (locationName.Trim().Length > 0)
{
feature.set_Value(index, locationName);
}
index = class4.FindField(NetworkConstants.SEQUENCE_FIELD);
if (index >= 0)
{
feature.set_Value(index, num2);
}
index = class4.FindField(NetworkConstants.STATUS_FIELD);
if (location.IsLocated)
{
feature.set_Value(index, 0);
}
else
{
feature.set_Value(index, 1);
}
if ((locationProperties != null) && (locationProperties.Count > 0))
{
IEnumerator enumerator = locationProperties.Keys.GetEnumerator();
while (enumerator.MoveNext())
{
string current = enumerator.Current as string;
if ((current != null) && (current.Length > 0))
{
index = class4.FindField(current);
if (index != -1)
{
feature.set_Value(index, locationProperties[current]);
}
}
}
}
feature.Store();
return(location.IsLocated);
}
/// <summary>
/// Set solver settings
/// </summary>
/// <param name="strNAClassName">NAClass name</param>
/// <param name="inputFC">Input feature class</param>
/// <param name="maxSnapTolerance">Max snap tolerance</param>
public void LoadNANetworkLocations(string strNAClassName, IFeatureClass inputFC, double maxSnapTolerance)
{
INamedSet classes = m_NAContext.NAClasses;
INAClass naClass = classes.get_ItemByName(strNAClassName) as INAClass;
// Delete existing locations from the specified NAClass
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader classLoader = new NAClassLoader();
classLoader.Locator = m_NAContext.Locator;
if (maxSnapTolerance > 0) ((INALocator3)classLoader.Locator).MaxSnapTolerance = maxSnapTolerance;
classLoader.NAClass = naClass;
// Create field map to automatically map fields from input class to NAClass
INAClassFieldMap fieldMap = new NAClassFieldMapClass();
fieldMap.CreateMapping(naClass.ClassDefinition, inputFC.Fields);
classLoader.FieldMap = fieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_NAContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_NAContext);
// Load network locations
int rowsIn = 0;
int rowsLocated = 0;
classLoader.Load((ICursor)inputFC.Search(null, true), null, ref rowsIn, ref rowsLocated);
// Message all of the network analysis agents that the analysis context has changed.
((INAContextEdit)m_NAContext).ContextChanged();
}
public void LoadNANetworkLocations(string strNAClassName, IFeatureClass pInputFC, double SnapTolerance)
{
INAClass class2 = this.m_pNAContext.NAClasses.get_ItemByName(strNAClassName) as INAClass;
class2.DeleteAllRows();
INAClassLoader loader = new NAClassLoaderClass
{
Locator = this.m_pNAContext.Locator
};
if (SnapTolerance > 0.0)
{
loader.Locator.SnapTolerance = SnapTolerance;
}
loader.NAClass = class2;
INAClassFieldMap map = new NAClassFieldMapClass();
map.CreateMapping(class2.ClassDefinition, pInputFC.Fields);
loader.FieldMap = map;
int rowsInCursor = 0;
int rowsLocated = 0;
IFeatureCursor cursor = pInputFC.Search(null, true);
loader.Load((ICursor)cursor, null, ref rowsInCursor, ref rowsLocated);
}
private void clearAll()
{
global.networkAnalysis = false;
pMainForm.getMainAxMapControl().CurrentTool = null;
ITable pTable = global.inputFClass as ITable;
pTable.DeleteSearchedRows(null);
//提取路径前，删除上一次路径route网络上下文
IFeatureClass routesFC;
routesFC = global.m_NAContext.NAClasses.get_ItemByName("Routes") as IFeatureClass;
ITable pTable1 = routesFC as ITable;
pTable1.DeleteSearchedRows(null);
//提取路径前，删除上一次路径Stops网络上下文
INAClass stopsNAClass = global.m_NAContext.NAClasses.get_ItemByName("Stops") as INAClass;
ITable ptable2 = stopsNAClass as ITable;
ptable2.DeleteSearchedRows(null);
//提取路径前，删除上一次barries网络上下文
INAClass barriesNAClass = global.m_NAContext.NAClasses.get_ItemByName("Barriers") as INAClass;
ITable pTable3 = barriesNAClass as ITable;
pTable3.DeleteSearchedRows(null);
global.PGC.DeleteAllElements();
global.clickedcount = 0;
(global.p2DMap as IActiveView).Refresh();
}
private bool LoadLocations(IFeatureWorkspace featureWorkspace)
{
IFeatureClass inputFeatureClass = null;
try
{
inputFeatureClass = featureWorkspace.OpenFeatureClass(txtInputFacilities.Text);
}
catch (Exception)
{
MessageBox.Show("Specified input feature class does not exist");
return(false);
}
INamedSet classes = m_naContext.NAClasses;
INAClass naClass = classes.get_ItemByName("Facilities") as INAClass;
// delete existing locations, except barriers
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader naClassLoader = new NAClassLoaderClass();
naClassLoader.Locator = m_naContext.Locator;
naClassLoader.Locator.SnapTolerance = 100;
naClassLoader.NAClass = naClass;
// Create field map to automatically map fields from input class to NAClass
INAClassFieldMap naClassFieldMap = new NAClassFieldMapClass();
naClassFieldMap.CreateMapping(naClass.ClassDefinition, inputFeatureClass.Fields);
naClassLoader.FieldMap = naClassFieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_naContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_naContext);
// load network locations
int rowsIn = 0;
int rowsLocated = 0;
naClassLoader.Load(inputFeatureClass.Search(null, true) as ICursor, null, ref rowsIn, ref rowsLocated);
if (rowsLocated <= 0)
{
MessageBox.Show("Facilities were not loaded from input feature class");
MessageBox.Show("没有导入任何结果！");
return(false);
}
// Message all of the network analysis agents that the analysis context has changed
INAContextEdit naContextEdit = m_naContext as INAContextEdit;
naContextEdit.ContextChanged();
return(true);
}
/// <summary>
/// Create the analysis layer, load the locations, solve the analysis, and write to disk
/// </summary>
public void SolveRoute()
{
// Open the feature workspace, input feature class, and network dataset
// As Workspace Factories are Singleton objects, they must be instantiated with the Activator
IWorkspaceFactory workspaceFactory = System.Activator.CreateInstance(System.Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory")) as IWorkspaceFactory;
IFeatureWorkspace featureWorkspace = workspaceFactory.OpenFromFile(Application.StartupPath + FGDB_WORKSPACE, 0) as IFeatureWorkspace;
IFeatureClass inputStopsFClass = featureWorkspace.OpenFeatureClass(INPUT_STOPS_FC);
// Obtain the dataset container from the workspace
ESRI.ArcGIS.Geodatabase.IFeatureDataset featureDataset = featureWorkspace.OpenFeatureDataset(FEATURE_DATASET);
var featureDatasetExtensionContainer = featureDataset as ESRI.ArcGIS.Geodatabase.IFeatureDatasetExtensionContainer;
ESRI.ArcGIS.Geodatabase.IFeatureDatasetExtension featureDatasetExtension = featureDatasetExtensionContainer.FindExtension(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTNetworkDataset);
var datasetContainer3 = featureDatasetExtension as ESRI.ArcGIS.Geodatabase.IDatasetContainer3;
// Use the container to open the network dataset.
ESRI.ArcGIS.Geodatabase.IDataset dataset = datasetContainer3.get_DatasetByName(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTNetworkDataset, NETWORK_DATASET);
INetworkDataset networkDataset = dataset as INetworkDataset;
// Create the Route NALayer
INALayer naLayer = CreateRouteAnalysisLayer("Route", networkDataset);
INAContext naContext = naLayer.Context;
INAClass stopsNAClass = naContext.NAClasses.get_ItemByName("Stops") as INAClass;
IFeatureClass routesFC = naContext.NAClasses.get_ItemByName("Routes") as IFeatureClass;
// Load the Stops
INAClassFieldMap naClassFieldMap = new NAClassFieldMapClass();
naClassFieldMap.set_MappedField("Name", INPUT_NAME_FIELD);
INAClassLoader naLoader = new NAClassLoaderClass();
naLoader.Locator = naContext.Locator;
naLoader.NAClass = stopsNAClass;
naLoader.FieldMap = naClassFieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = naContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(naContext);
int rowsInCursor = 0;
int rowsLocated = 0;
naLoader.Load(inputStopsFClass.Search(new QueryFilterClass(), false) as ICursor, new CancelTrackerClass(), ref rowsInCursor, ref rowsLocated);
//Message all of the network analysis agents that the analysis context has changed
((INAContextEdit)naContext).ContextChanged();
//Solve
INASolver naSolver = naContext.Solver;
naSolver.Solve(naContext, new GPMessagesClass(), new CancelTrackerClass());
//Save the layer to disk
SaveLayerToDisk(naLayer as ILayer, System.Environment.CurrentDirectory + @"\Route.lyr");
}
/// <summary>
/// 加载参与分析的点要素
/// 按住Ctrl点击下行链接[Onclick]查看使用
/// <see cref="WhuGIS.ArcEngineTool.NetworkAnalysis.GetPathSolve.ShortPathSolveCommand.OnClick"/>
/// </summary>
/// <param name="strNAClassName"></param>
/// <param name="inputFC"></param>
/// <param name="m_NAContext"></param>
/// <param name="snapTolerance"></param>
public static void LoadNANetworkLocations(string strNAClassName, IFeatureClass inputFC, INAContext m_NAContext,
double snapTolerance)
{
ITable b1 = inputFC as ITable;
int i1 = b1.RowCount(null);
INAClass naClass;
INamedSet classes;
classes = m_NAContext.NAClasses;
naClass = classes.get_ItemByName(strNAClassName) as INAClass;
ITable b2 = naClass as ITable;
int i2 = b2.RowCount(null);
naClass.DeleteAllRows();
ITable b3 = naClass as ITable;
int i3 = b2.RowCount(null);
INAClassLoader classLoader = new NAClassLoader();
classLoader.Locator = m_NAContext.Locator;
if (snapTolerance > 0)
{
classLoader.Locator.SnapTolerance = snapTolerance; //设置容差
}
classLoader.NAClass = naClass;
//设置字段映射
INAClassFieldMap fieldMap = null;
fieldMap = new NAClassFieldMap();
fieldMap.set_MappedField("FID", "FID");
classLoader.FieldMap = fieldMap;
int rowsIn = 0;
int rowLocated = 0;
IFeatureCursor featureCursor = inputFC.Search(null, true);
classLoader.Load((ICursor)featureCursor, null, ref rowsIn, ref rowLocated);
INAClass na = classLoader.NAClass;
ITable b5 = na as ITable;
int i5 = b2.RowCount(null);
ITable b4 = inputFC as ITable;
int i4 = b1.RowCount(null);
((INAContextEdit)m_NAContext).ContextChanged();
}
/// <summary>
/// Load the input table and create field map to map fields from input table to NAClass
/// </summary>
/// <param name="strNAClassName">NAClass name</param>
/// <param name="inputTable">Input table</param>
public void LoadNANetworkLocations(string strNAClassName, ITable inputTable)
{
INamedSet classes = m_NAContext.NAClasses;
INAClass naClass = classes.get_ItemByName(strNAClassName) as INAClass;
// Delete existing rows from the specified NAClass
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader loader = new NAClassLoader();
loader.Locator = m_NAContext.Locator;
loader.Locator.SnapTolerance = 100;
loader.NAClass = naClass;
// Create field map to automatically map fields from input table to NAclass
INAClassFieldMap fieldMap = new NAClassFieldMapClass();
fieldMap.CreateMapping(naClass.ClassDefinition, inputTable.Fields);
loader.FieldMap = fieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_NAContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_NAContext);
// Load input table
int rowsIn = 0;
int rowsLocated = 0;
loader.Load(inputTable.Search(null, true), null, ref rowsIn, ref rowsLocated);
// Message all of the network analysis agents that the analysis context has changed.
INAContextEdit naContextEdit = m_NAContext as INAContextEdit;
naContextEdit.ContextChanged();
}
public static void GetClasses(INALayer layer, out NameValueCollection inputClasses,
out NameValueCollection outputClasses)
{
INamedSet nAClasses = layer.Context.NAClasses;
inputClasses = new NameValueCollection();
outputClasses = new NameValueCollection();
for (int i = 0; i < nAClasses.Count; i++)
{
INAClass class2 = nAClasses.get_Item(i) as INAClass;
string name = class2.ClassDefinition.Name;
string str2 = layer.get_LayerByNAClassName(name).Name;
if (class2.ClassDefinition.IsInput)
{
inputClasses.Add(str2, name);
}
else
{
outputClasses.Add(str2, name);
}
}
}
private void Solve()
{
INALayer layer = this.CreateRouteAnalysisLayer("Route", this.m_pNetworkDataset);
INAContext nAContext = layer.Context;
INAClass class2 = nAContext.NAClasses.get_ItemByName("Stops") as INAClass;
IFeatureClass class3 = nAContext.NAClasses.get_ItemByName("Routes") as IFeatureClass;
INAClassFieldMap map = new NAClassFieldMapClass();
map.set_MappedField("Name", this.SHAPE_INPUT_NAME_FIELD);
INAClassLoader loader = new NAClassLoaderClass
{
Locator = nAContext.Locator,
NAClass = class2,
FieldMap = map
};
int rowsInCursor = 0;
int rowsLocated = 0;
loader.Load(this.m_pInputStopsFClass.Search(new QueryFilterClass(), false) as ICursor,
new CancelTrackerClass(), ref rowsInCursor, ref rowsLocated);
nAContext.Solver.Solve(nAContext, new GPMessagesClass(), new CancelTrackerClass());
this.SaveLayerToDisk(layer as ILayer, Environment.CurrentDirectory + @"\Route.lyr");
}
public bool ShowModal(IMapControl3 mapControl, IEngineNetworkAnalystEnvironment naEnv)
{
// Initialize variables
m_okClicked = false;
m_listDisplayTable = new System.Collections.ArrayList();
// Get the NALayer and NAContext
INALayer naLayer = naEnv.NAWindow.ActiveAnalysis;
INAContext naContext = naLayer.Context;
//Get the active category
IEngineNAWindowCategory2 activeCategory = naEnv.NAWindow.ActiveCategory as IEngineNAWindowCategory2;
if (activeCategory == null)
{
return(false);
}
INAClass naClass = activeCategory.NAClass;
IDataset naDataset = naClass as IDataset;
IDataLayer pDataLayer = activeCategory.DataLayer;
ILayer pLayer = pDataLayer as ILayer;
IFeatureLayer pFeatureLayer = pDataLayer as IFeatureLayer;
IStandaloneTable pStandaloneTable = pDataLayer as IStandaloneTable;
esriGeometryType targetGeoType = esriGeometryType.esriGeometryNull;
String dataLayerName = "";
if (pFeatureLayer != null)
{
if (pLayer.Valid)
{
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
if (pFeatureClass != null)
{
targetGeoType = pFeatureClass.ShapeType;
dataLayerName = pLayer.Name;
}
}
}
else if (pStandaloneTable != null)
{
dataLayerName = pStandaloneTable.Name;
}
if (dataLayerName.Length == 0)
{
return(false);
}
this.Text = "Load Items into " + dataLayerName;
// Loop through all the sourcedisplayTables having targetGeoType to the combo box and the
// list of displayTables
IEnumLayer sourceLayers = null;
ILayer sourceLayer = null;
IDisplayTable sourceDisplayTable = null;
UID searchInterfaceUID = new UID();
if (targetGeoType != esriGeometryType.esriGeometryNull)
{
searchInterfaceUID.Value = typeof(IFeatureLayer).GUID.ToString("B");
sourceLayers = mapControl.Map.get_Layers(searchInterfaceUID, true);
sourceLayer = sourceLayers.Next();
while (sourceLayer != null)
{
IFeatureLayer sourceFeatureLayer = sourceLayer as IFeatureLayer;
sourceDisplayTable = sourceLayer as IDisplayTable;
if ((sourceFeatureLayer != null) && (sourceDisplayTable != null))
{
IFeatureClass sourceFeatureClass = sourceFeatureLayer.FeatureClass;
esriGeometryType sourceGeoType = sourceFeatureClass.ShapeType;
if ((sourceGeoType == targetGeoType) ||
(targetGeoType == esriGeometryType.esriGeometryPoint && sourceGeoType == esriGeometryType.esriGeometryMultipoint))
{
// Add the layer name to the combobox and the layer to the list
cboInputData.Items.Add(sourceLayer.Name);
m_listDisplayTable.Add(sourceDisplayTable);
}
}
sourceLayer = sourceLayers.Next();
}
}
else //if (targetGeoType == esriGeometryType.esriGeometryNull)
{
IStandaloneTableCollection sourceStandaloneTables = mapControl.Map as IStandaloneTableCollection;
IStandaloneTable sourceStandaloneTable = null;
sourceDisplayTable = null;
int count = 0;
if (sourceStandaloneTables != null)
{
count = sourceStandaloneTables.StandaloneTableCount;
}
for (int i = 0; i < count; ++i)
{
sourceStandaloneTable = sourceStandaloneTables.get_StandaloneTable(i);
sourceDisplayTable = sourceStandaloneTable as IDisplayTable;
if ((sourceStandaloneTable != null) && (sourceDisplayTable != null))
{
// Add the table name to the combobox and the layer to the list
cboInputData.Items.Add(sourceStandaloneTable.Name);
m_listDisplayTable.Add(sourceDisplayTable);
}
}
searchInterfaceUID.Value = typeof(INALayer).GUID.ToString("B");
sourceLayers = mapControl.Map.get_Layers(searchInterfaceUID, true);
sourceLayer = sourceLayers.Next();
while (sourceLayer != null)
{
INALayer sourceNALayer = sourceLayer as INALayer;
if (sourceNALayer != null)
{
sourceStandaloneTables = sourceNALayer as IStandaloneTableCollection;
sourceStandaloneTable = null;
sourceDisplayTable = null;
count = 0;
if (sourceStandaloneTables != null)
{
count = sourceStandaloneTables.StandaloneTableCount;
}
for (int i = 0; i < count; ++i)
{
sourceStandaloneTable = sourceStandaloneTables.get_StandaloneTable(i);
sourceDisplayTable = sourceStandaloneTable as IDisplayTable;
if ((sourceStandaloneTable != null) && (sourceDisplayTable != null))
{
// Add the table name to the combobox and the layer to the list
cboInputData.Items.Add(sourceStandaloneTable.Name);
m_listDisplayTable.Add(sourceDisplayTable);
}
}
}
sourceLayer = sourceLayers.Next();
}
}
//Select the first display table from the list
if (cboInputData.Items.Count > 0)
{
cboInputData.SelectedIndex = 0;
}
// Show the window
this.ShowDialog();
// If we selected a layer and clicked OK, load the locations
if (m_okClicked && (cboInputData.SelectedIndex >= 0))
{
// Get a cursor on the source display table (either though the selection set or table)
// Use IDisplayTable because it accounts for joins, querydefs, etc.
// IDisplayTable is implemented by FeatureLayers and StandaloneTables.
//
IDisplayTable displayTable = m_listDisplayTable[cboInputData.SelectedIndex] as IDisplayTable;
ICursor cursor;
if (chkUseSelection.Checked)
{
ISelectionSet selSet;
selSet = displayTable.DisplaySelectionSet;
selSet.Search(null, false, out cursor);
}
else
{
cursor = displayTable.SearchDisplayTable(null, false);
}
// Setup NAClassLoader and Load Locations
INAClassLoader2 naClassLoader = new NAClassLoader() as INAClassLoader2;
naClassLoader.Initialize(naContext, naDataset.Name, cursor);
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = naContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(naContext);
int rowsIn = 0;
int rowsLocated = 0;
naClassLoader.Load(cursor, null, ref rowsIn, ref rowsLocated);
return(true);
}
return(false);
}
public override void OnClick()
{
if (m_mapControl == null)
{
MessageBox.Show("Error: Map control is null for this command");
return;
}
// Get the NALayer and corresponding NAContext of the layer that
// was right-clicked on in the table of contents
// m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown
var naLayer = m_mapControl.CustomProperty as INALayer;
if (naLayer == null)
{
MessageBox.Show("Error: NALayer was not set as the CustomProperty of the map control");
return;
}
var naEnv = CommonFunctions.GetTheEngineNetworkAnalystEnvironment();
if (naEnv == null || naEnv.NAWindow == null)
{
MessageBox.Show("Error: EngineNetworkAnalystEnvironment is not properly configured");
return;
}
ESRI.ArcGIS.Controls.IEngineNAWindowCategory naWindowCategory = naEnv.NAWindow.ActiveCategory;
if (naWindowCategory == null)
{
MessageBox.Show("Error: There is no active category for the NAWindow");
return;
}
INAClass naClass = naWindowCategory.NAClass;
if (naClass == null)
{
MessageBox.Show("Error: There is no NAClass for the active category");
return;
}
INAClassDefinition naClassDefinition = naClass.ClassDefinition;
if (naClassDefinition == null)
{
MessageBox.Show("Error: NAClassDefinition is null for the active NAClass");
return;
}
if (!naClassDefinition.IsInput)
{
MessageBox.Show("Error: Locations can only be loaded into an input NAClass");
return;
}
// Set the Active Analysis layer to be the layer right-clicked on
naEnv.NAWindow.ActiveAnalysis = naLayer;
// Show the Property Page form for ArcGIS Network Analyst extension
var loadLocations = new frmLoadLocations();
if (loadLocations.ShowModal(m_mapControl, naEnv))
{
// Notify that the context has changed, because we have added locations to a NAClass within it
var contextEdit = naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// Refresh the NAWindow and the map
m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, m_mapControl.Extent);
naEnv.NAWindow.UpdateContent(naEnv.NAWindow.ActiveCategory);
}
}
public bool ShowModal(IMapControl3 mapControl, IEngineNetworkAnalystEnvironment naEnv)
{
// Initialize variables
m_okClicked = false;
m_lstLayers = new System.Collections.ArrayList();
this.Text = "Load Locations into " + naEnv.NAWindow.ActiveCategory.Layer.Name;
// Loop through all the layers, adding the point feature layers to the combo box and array
IEnumLayer layers = mapControl.Map.get_Layers(null, true);
ILayer layer;
layer = layers.Next();
while (layer != null)
{
IFeatureLayer fLayer = layer as IFeatureLayer;
IDisplayTable displayTable = layer as IDisplayTable;
if ((fLayer != null) && (displayTable != null))
{
IFeatureClass fClass = fLayer.FeatureClass;
if (fClass.ShapeType == esriGeometryType.esriGeometryPoint)
{
// Add the layer name to the combobox and the layer to the list
cboPointLayers.Items.Add(layer.Name);
m_lstLayers.Add(layer);
}
}
layer = layers.Next();
}
//Select the first point feature layer from the list
if (cboPointLayers.Items.Count > 0)
{
cboPointLayers.SelectedIndex = 0;
}
// Show the window
this.ShowDialog();
// If we selected a layer and clicked OK, load the locations
if (m_okClicked && (cboPointLayers.SelectedIndex >= 0))
{
// Get the NALayer and NAContext
INALayer naLayer = naEnv.NAWindow.ActiveAnalysis;
INAContext naContext = naLayer.Context;
//Get the active category
IEngineNAWindowCategory activeCategory = naEnv.NAWindow.ActiveCategory;
INAClass naClass = activeCategory.NAClass;
IDataset naDataset = naClass as IDataset;
// Get a cursor to the input features (either though the selection set or table)
// Use IDisplayTable because it accounts for joins, querydefs, etc.
IDisplayTable displayTable = m_lstLayers[cboPointLayers.SelectedIndex] as IDisplayTable;
ICursor cursor;
if (chkUseSelectedFeatures.Checked)
{
ISelectionSet selSet;
selSet = displayTable.DisplaySelectionSet;
selSet.Search(null, false, out cursor);
}
else
{
cursor = displayTable.SearchDisplayTable(null, false);
}
// Setup NAClassLoader and Load Locations
INAClassLoader2 naClassLoader = new NAClassLoader() as INAClassLoader2;
naClassLoader.Initialize(naContext, naDataset.Name, cursor);
int rowsIn = 0;
int rowsLocated = 0;
naClassLoader.Load(cursor, null, ref rowsIn, ref rowsLocated);
return(true);
}
else
{
return(false);
}
}
