public override void OnClick()
{
// 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
INALayer naLayer = (INALayer)m_mapControl.CustomProperty;
// Set the Active Analysis layer to be the layer right-clicked on
m_naEnv.NAWindow.ActiveAnalysis = naLayer;
if (!Enabled)
{
return;
}
// Show the Property Page form for Network Analyst
frmLoadLocations loadLocations = new frmLoadLocations();
if (loadLocations.ShowModal(m_mapControl, m_naEnv))
{
// notify that the context has changed because we have added locations to a NAClass within it
INAContextEdit contextEdit = m_naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// If loaded locations, refresh the NAWindow and the Screen
m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, m_mapControl.Extent);
m_naEnv.NAWindow.UpdateContent(m_naEnv.NAWindow.ActiveCategory);
}
}
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);
}
private INAContext CreateSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset dENetworkDataset = GetDENetworkDataset(networkDataset);
INASolver nASolver = new NARouteSolver();
INAContextEdit nAContextEdit = nASolver.CreateContext(dENetworkDataset, nASolver.Name) as INAContextEdit;
nAContextEdit.Bind(networkDataset, null);
return(nAContextEdit as INAContext);
}
public INAContext CreateSolverContext(INetworkDataset pNetDataset)
{
IDENetworkDataset dENetworkDataset = this.GetDENetworkDataset(pNetDataset);
INASolver solver = new NAClosestFacilitySolverClass();
INAContextEdit edit = solver.CreateContext(dENetworkDataset, solver.Name) as INAContextEdit;
edit.Bind(pNetDataset, new GPMessagesClass());
return(edit as INAContext);
}
/// <summary>
/// 根据网络数据集创建网络分析上下文
/// </summary>
/// <param name="networkDataset"></param>
/// <returns></returns>
private static INAContext CreateNAContext(INetworkDataset networkDataset)
{
IDENetworkDataset pDENetworkDataset = GetDENetworkDataset(networkDataset);
INASolver pNASolver = new NARouteSolverClass();
INAContextEdit pNAContextEdit = pNASolver.CreateContext(pDENetworkDataset, pNASolver.Name) as INAContextEdit;
pNAContextEdit.Bind(networkDataset, new GPMessagesClass());
return(pNAContextEdit as INAContext);
}
/// <summary>
/// Create NASolver and NAContext
/// </summary>
/// <param name="networkDataset">Input network dataset</param>
/// <returns>NAContext</returns>
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the data element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NAODCostMatrixSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
//Bind a context using the network dataset
contextEdit.Bind(networkDataset, new GPMessagesClass());
return contextEdit as INAContext;
}
//*********************************************************************************
// ArcGIS Network Analyst extension functions
// ********************************************************************************
//*********************************************************************************
// Create NASolver and NAContext
//*********************************************************************************
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the Data Element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NALocationAllocationSolverClass();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
//创建网络分析上下文
public static INAContext CreatePathSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset deNDS = GetPathDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
/// <summary>
/// 创建网络分析上下文
/// </summary>
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//获取创建网络分析上下文所需的IDENETWORKDATASET类型参数
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
//创建网络分析上下文
public static INAContext CreatePathSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset deNDS = GetPathDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.DisplayName) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());//将网络数据集与网络上下文对象绑定在一起
//GPMessagesClass对象用于记录错误信息。
return(contextEdit as INAContext);
}
private void CreateContextAndSolver(INetworkDataset networkDataset)
{
if (networkDataset == null)
{
return;
}
IDatasetComponent datasetComponent = networkDataset as IDatasetComponent;
IDENetworkDataset deNetworkDataset = datasetComponent.DataElement as IDENetworkDataset;
INASolver naSolver = new NAServiceAreaSolverClass();
m_naContext = naSolver.CreateContext(deNetworkDataset, "ServiceArea");
INAContextEdit naContextEdit = m_naContext as INAContextEdit;
naContextEdit.Bind(networkDataset, new GPMessagesClass());
}
private void miLoadLocations_Click(object sender, System.EventArgs e)
{
IMapControl3 mapControl = (IMapControl3)axMapControl1.Object;
// 显示网络分析的属性页窗体
frmLoadLocations loadLocations = new frmLoadLocations();
if (loadLocations.ShowModal(mapControl, m_naEnv))
{
// 上下文已更改，已将位置添加到其中的一个naclass
INAContextEdit contextEdit = m_naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// 如果加载，刷新NAWindow屏幕
INALayer naLayer = m_naWindow.ActiveAnalysis;
mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, mapControl.Extent);
m_naWindow.UpdateContent(m_naWindow.ActiveCategory);
}
}
private void loadLocationsToolStripMenuItem_Click(object sender, EventArgs e)
{
IMapControl3 mapControl = (IMapControl3)axMapControl1.Object;
// Show the Property Page form for Network Analyst
frmLoadLocation loadLocations = new frmLoadLocation();
if (loadLocations.ShowModal(mapControl, m_naEnv))
{
// notify that the context has changed because we have added locations to a NAClass within it
INAContextEdit contextEdit = m_naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// If loaded locations, refresh the NAWindow and the Screen
INALayer naLayer = m_naWindow.ActiveAnalysis;
mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, mapControl.Extent);
m_naWindow.UpdateContent(m_naWindow.ActiveCategory);
}
}
/// <summary>
/// Create a new network analysis layer and set some solver settings
/// </summary>
private INALayer CreateRouteAnalysisLayer(String layerName, INetworkDataset networkDataset)
{
INARouteSolver naRouteSolver = new NARouteSolverClass();
INASolverSettings naSolverSettings = naRouteSolver as INASolverSettings;
INASolver naSolver = naRouteSolver as INASolver;
//Get the NetworkDataset's Data Element
IDatasetComponent datasetComponent = networkDataset as IDatasetComponent;
IDENetworkDataset deNetworkDataset = datasetComponent.DataElement as IDENetworkDataset;
//Create the NAContext and bind to it
INAContext naContext;
naContext = naSolver.CreateContext(deNetworkDataset, layerName);
INAContextEdit naContextEdit = naContext as INAContextEdit;
naContextEdit.Bind(networkDataset, new GPMessagesClass());
//Create the NALayer
INALayer naLayer;
naLayer = naSolver.CreateLayer(naContext);
(naLayer as ILayer).Name = layerName;
//Set properties on the route solver interface
naRouteSolver.FindBestSequence = true;
naRouteSolver.PreserveFirstStop = true;
naRouteSolver.PreserveLastStop = false;
naRouteSolver.UseTimeWindows = false;
naRouteSolver.OutputLines = esriNAOutputLineType.esriNAOutputLineTrueShapeWithMeasure;
//Set some properties on the general INASolverSettings interface
IStringArray restrictions = naSolverSettings.RestrictionAttributeNames;
restrictions.Add("Oneway");
naSolverSettings.RestrictionAttributeNames = restrictions;
// Update the context based on the changes made to the solver settings
naSolver.UpdateContext(naContext, deNetworkDataset, new GPMessagesClass());
//Return the layer
return(naLayer);
}
/// <summary>
/// Set solver settings
/// </summary>
/// <param name="strNAClassName">NAClass name</param>
/// <param name="inputFC">Input feature class</param>
/// <param name="snapTolerance">Snap tolerance</param>
public void LoadNANetworkLocations(string strNAClassName, IFeatureClass inputFC, double snapTolerance)
{
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 loader = new NAClassLoader();
loader.Locator = m_NAContext.Locator;
if (snapTolerance > 0)
{
loader.Locator.SnapTolerance = snapTolerance;
}
loader.NAClass = naClass;
// Create field map to automatically map fields from input class to NAClass
INAClassFieldMap fieldMap = new NAClassFieldMapClass();
fieldMap.CreateMapping(naClass.ClassDefinition, inputFC.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 network locations
int rowsIn = 0;
int rowsLocated = 0;
loader.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 naContextEdit = m_NAContext as INAContextEdit;
naContextEdit.ContextChanged();
}
private void miAddItem_Click(object sender, System.EventArgs e)
{
//可以双击该项来编辑属性
//只为新项填充initDefaultValues方法中的默认值和自动生成的名称值。
IMapControl3 mapControl = (IMapControl3)axMapControl1.Object;
IEngineNAWindowCategory2 activeCategory = m_naWindow.ActiveCategory as IEngineNAWindowCategory2;
IDataLayer pDataLayer = activeCategory.DataLayer;
// 在类中创建一个新行并填充并初始默认值
ITable table = pDataLayer as ITable;
IRow row = table.CreateRow();
IRowSubtypes rowSubtypes = row as IRowSubtypes;
rowSubtypes.InitDefaultValues();
// 自动生成显示名称
IFeatureLayer ipFeatureLayer = activeCategory.Layer as IFeatureLayer;
IStandaloneTable ipStandaloneTable = pDataLayer as IStandaloneTable;
string name = "";
if (ipFeatureLayer != null)
{
name = ipFeatureLayer.DisplayField;
}
else if (ipStandaloneTable != null)
{
name = ipStandaloneTable.DisplayField;
}
//如果显示字段为空字符串或不代表NaClass上的实际字段，则跳过自动生成
string currentName = "";
int fieldIndex = row.Fields.FindField(name);
if (fieldIndex >= 0)
{
currentName = row.get_Value(fieldIndex) as string;
if (currentName.Length <= 0)
{
row.set_Value(fieldIndex, "Item" + ++autogenInt);
}
}
INAClassDefinition naClassDef = activeCategory.NAClass.ClassDefinition;
if (naClassDef.Name == "OrderPairs")
{
fieldIndex = row.Fields.FindField("SecondOrderName");
if (fieldIndex >= 0)
{
string secondName = row.get_Value(fieldIndex) as string;
if (secondName.Length <= 0)
{
row.set_Value(fieldIndex, "Item" + ++autogenInt);
}
}
}
row.Store();
// 向naclass添加项
INAContextEdit contextEdit = m_naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// 刷新 NAWindow 和屏幕界面
INALayer naLayer = m_naWindow.ActiveAnalysis;
mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, mapControl.Extent);
m_naWindow.UpdateContent(m_naWindow.ActiveCategory);
}
private void addItemToolStripMenuItem_Click(object sender, EventArgs e)
{
IMapControl3 mapControl = (IMapControl3)axMapControl1.Object;
IEngineNAWindowCategory2 activeCategory = m_naWindow.ActiveCategory as IEngineNAWindowCategory2;
IDataLayer pDataLayer = activeCategory.DataLayer;
// In order to add an item, we need to create a new row in the class and populate it
// with the initial default values for that class.
ITable table = pDataLayer as ITable;
IRow row = table.CreateRow();
IRowSubtypes rowSubtypes = row as IRowSubtypes;
rowSubtypes.InitDefaultValues();
IFeatureLayer ipFeatureLayer = activeCategory.Layer as IFeatureLayer;
IStandaloneTable ipStandaloneTable = pDataLayer as IStandaloneTable;
string name = "";
if (ipFeatureLayer != null)
{
name = ipFeatureLayer.DisplayField;
}
else if (ipStandaloneTable != null)
{
name = ipStandaloneTable.DisplayField;
}
string currentName = "";
int fieldIndex = row.Fields.FindField(name);
if (fieldIndex >= 0)
{
currentName = row.get_Value(fieldIndex) as string;
if (currentName.Length <= 0)
{
row.set_Value(fieldIndex, "Item" + ++autogenInt);
}
}
INAClassDefinition naClassDef = activeCategory.NAClass.ClassDefinition;
if (naClassDef.Name == "OrderPairs")
{
fieldIndex = row.Fields.FindField("SecondOrderName");
if (fieldIndex >= 0)
{
string secondName = row.get_Value(fieldIndex) as string;
if (secondName.Length <= 0)
{
row.set_Value(fieldIndex, "Item" + ++autogenInt);
}
}
}
row.Store();
// notify that the context has changed because we have added an item to a NAClass within it
INAContextEdit contextEdit = m_naEnv.NAWindow.ActiveAnalysis.Context as INAContextEdit;
contextEdit.ContextChanged();
// refresh the NAWindow and the Screen
INALayer naLayer = m_naWindow.ActiveAnalysis;
mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, mapControl.Extent);
m_naWindow.UpdateContent(m_naWindow.ActiveCategory);
}
