public void CreateRoutes(IFeatureClass pLineFC, string InputRouteIDFieldName, string fromMeasureField,
string toMeasureField)
{
try
{
IWorkspace selectionContainer = (pLineFC as IDataset).Workspace;
IFeatureClassName outputFClassName = new FeatureClassNameClass();
IDataset dataset = (IDataset)selectionContainer;
IWorkspaceName fullName = (IWorkspaceName)dataset.FullName;
IDatasetName name3 = (IDatasetName)outputFClassName;
name3.WorkspaceName = fullName;
name3.Name = "CreateRoutes";
IFields fields = pLineFC.Fields;
int index = fields.FindField(pLineFC.ShapeFieldName);
IClone geometryDef = (IClone)fields.get_Field(index).GeometryDef;
IGeometryDef outputGeometryDef = (IGeometryDef)geometryDef.Clone();
((ISpatialReference2)outputGeometryDef.SpatialReference).SetMFalseOriginAndUnits(-1000.0, 1000.0);
IQueryFilter queryFilter = new QueryFilterClass
{
WhereClause = "[ROUTE1] <> 0"
};
ISelectionSet2 set =
(ISelectionSet2)
pLineFC.Select(queryFilter, esriSelectionType.esriSelectionTypeIDSet,
esriSelectionOption.esriSelectionOptionNormal, selectionContainer);
IRouteMeasureCreator creator = new RouteMeasureCreatorClass
{
InputFeatureSelection = set,
InputRouteIDFieldName = InputRouteIDFieldName
};
IEnumBSTR mbstr = creator.CreateUsing2Fields(fromMeasureField, toMeasureField, outputFClassName,
outputGeometryDef, "", null);
for (string str = mbstr.Next(); str != null; str = mbstr.Next())
{
}
}
catch (COMException exception)
{
MessageBox.Show(exception.Message, "COM Error: " + exception.ErrorCode.ToString(), MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
}
catch (Exception exception2)
{
MessageBox.Show(exception2.Message, ".NET Error: ", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
public void CreateRoutesUsing2Fields(string pAccessWS, string sLineFC, string sOutRouteFC, string sWhereClause, string sRouteIDField, string sFromMeasureField, string sToMeasureField)
{
try
{
IWorkspaceFactory wsf = new AccessWorkspaceFactoryClass();
IWorkspace ws = wsf.OpenFromFile(pAccessWS, 0);
IFeatureWorkspace fws = (IFeatureWorkspace)ws;
IFeatureClass lineFC = fws.OpenFeatureClass(sLineFC);
// Create an output feature class name object. We'll write to a stand alone feature class in the
// the same workspace as the inputs
IDataset ds = (IDataset)ws;
IWorkspaceName outWSN = (IWorkspaceName)ds.FullName;
IFeatureClassName outFCN = new FeatureClassNameClass();
IDatasetName outDSN = (IDatasetName)outFCN;
outDSN.WorkspaceName = outWSN;
outDSN.Name = sOutRouteFC;
//This name should not already exist
// Create a geometry definition for the new feature class. For the most part, we will copy the geometry
// definition from the input lines. We'll explicitly set the M Domain, however. You should always set an
// M Domain that is appropriate to your data. What is below is just a sample.
IFields flds = lineFC.Fields;
Int32 i = flds.FindField(lineFC.ShapeFieldName);
IField fld = flds.get_Field(i);
IClone GDefclone = (IClone)fld.GeometryDef;
IGeometryDef gDef = (IGeometryDef)GDefclone.Clone();
ISpatialReference2 srRef = (ISpatialReference2)gDef.SpatialReference;
srRef.SetMFalseOriginAndUnits(-1000, 10000);
// Create a selection set to limit the number of lines that will be used to create routes
IQueryFilter qFilt = new QueryFilterClass();
qFilt.WhereClause = sWhereClause;
ISelectionSet2 selSet = (ISelectionSet2)lineFC.Select(qFilt, esriSelectionType.esriSelectionTypeIDSet, esriSelectionOption.esriSelectionOptionNormal, ws);
// Create a new RouteMeasureCreator object. Note that below, we use the selection set and not the
// InputFeatureClass property
IRouteMeasureCreator routeCreator = new RouteMeasureCreatorClass();
routeCreator.InputFeatureSelection = selSet;
routeCreator.InputRouteIDFieldName = sRouteIDField;
IEnumBSTR errors = routeCreator.CreateUsing2Fields(sFromMeasureField, sToMeasureField, outFCN, gDef, "", null);
// The results of running CreatingUsing2Fields returns IEnumBSTR, which is a container
// for a list of error strings indicating why certain lines could not be used to create routes.
string sError = errors.Next();
do
{
System.Windows.Forms.MessageBox.Show(sError);
sError = errors.Next();
} while (sError.Length != 0);
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show(e.Message);
}
}
