public RouteEventSource( 
   RouteInfo routeInfo,
   EventInfo eventInfo,
   RouteEventSourceOptions routeEventSourceOptions
)

{
  static void CreateLineEventSource(Geodatabase geodatabase, string routeFeatureClassName = "Roads", string eventTableName = "Accidents", string routeIdFieldName = "RID", string toMeasureFieldName = "toMeasure", string fromMeasureFieldName = "fromMeasure", string offsetFieldName = "Offset")
  {
    using (FeatureClass routesFeatureClass = geodatabase.OpenDataset<FeatureClass>(routeFeatureClassName))
    using (Table eventsTable = geodatabase.OpenDataset<Table>(eventTableName))
    {
      RouteInfo routeInfo = new RouteInfo(routesFeatureClass, routeIdFieldName);
      EventInfo eventInfo = new LineEventInfo(eventsTable, routeIdFieldName, fromMeasureFieldName, toMeasureFieldName, offsetFieldName);
      RouteEventSourceOptions routeEventSourceOptions = new LineEventSourceOptions() { IsPositiveOffsetOnRight = true };

      using (RouteEventSource routeEventSource = new RouteEventSource(routeInfo, eventInfo, routeEventSourceOptions))
      using (RouteEventSourceDefinition routeEventSourceDefinition = routeEventSource.GetDefinition())
      {
        // Locating errors 
        IReadOnlyList<RouteEventSourceError> errors = routeEventSource.GetErrors();

        // Route event source fields 
        IReadOnlyList<Field> routeEventSourceFields = routeEventSourceDefinition.GetFields();

        // Add RouteEventSource to the ArcGIS Pro map
        FeatureLayerCreationParams layerParams = new FeatureLayerCreationParams(routeEventSource)
        {
          Name = "HighCrashAreas"
        };

        LayerFactory.Instance.CreateLayer<FeatureLayer>(layerParams, MapView.Active.Map);
      }
    }
  }
}

{
  static void LocateLineFeaturesAlongRoutes(Geodatabase geodatabase, string routeFeatureClassName = "Roads", string eventTableName = "Accidents", string routeIdFieldName = "RID", string toMeasureFieldName = "toMeasure", string fromMeasureFieldName = "fromMeasure")
  {
    // Configure events table
    EventTableConfiguration lineEventTableConfiguration = new LineEventTableConfiguration(eventTableName, routeIdFieldName, fromMeasureFieldName, toMeasureFieldName) { KeepAllFields = true, MDirectionOffset = true };

    using (FeatureClass routeFeatureClass = geodatabase.OpenDataset<FeatureClass>(routeFeatureClassName))
    using (FeatureClass highCrashAreaFeatureClass = geodatabase.OpenDataset<FeatureClass>("HighCrashRegion"))
    {
      RouteInfo routeInfo = new RouteInfo(routeFeatureClass, routeIdFieldName);

      // Creates an event table inside the geodatabase
      routeInfo.LocateFeatures(highCrashAreaFeatureClass, 0.5, lineEventTableConfiguration);

      // Open newly created event table
      using (Table eventTable = geodatabase.OpenDataset<Table>(eventTableName))
      {
        EventInfo eventInfo = new LineEventInfo(eventTable, routeIdFieldName, fromMeasureFieldName, toMeasureFieldName);

        // Create RouteEventSource using new event table
        using (RouteEventSource routeEventSource = new RouteEventSource(routeInfo, eventInfo, new LineEventSourceOptions()))
        {
          // Process the routeEventSource as needed ...
        }
      }
    }
  }
}