HasTrackIDField Method (RealtimeFeatureClassDefinition)

In This Topic

Gets a value indicating whether this feature class has a field whose values are used to group features in tracks. This method must be called on the MCT. Use QueuedTask.Run.

Syntax

C#
Visual Basic (Declaration)

public bool HasTrackIDField()

Public Function HasTrackIDField() As Boolean

Return Value

true if this table has a field containing track ids; otherwise, false.

Exceptions

Exception	Description
ArcGIS.Core.CalledOnWrongThreadException	This method or property must be called within the lambda passed to QueuedTask.Run.

Remarks

If the table has a TrackID field, then you can renderer previous observations with different symbology and/or draw lines by connecting those observation locations.

Also refer to ArcGIS.Deskop.Mapping.StreamLayer.SetPreviousObservationsRenderer and ArcGIS.Deskop.Mapping.StreamLayer.SetTrackLinesRenderer for more details.

Example

Check the Realtime Feature Class is Track Aware

using (var rfc = streamLayer.GetFeatureClass())
using (var rfc_def = rfc.GetDefinition())
{
  if (rfc_def.HasTrackIDField())
  {
    //Track aware
  }
}

Get the Track Id Field from the Realtime Feature class

//Must be on QueuedTask
using (var rfc = streamLayer.GetFeatureClass())
using (var rfc_def = rfc.GetDefinition())
{
  if (rfc_def.HasTrackIDField())
  {
    var fld_name = rfc_def.GetTrackIDField();

  }
}

Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

Reference

RealtimeFeatureClassDefinition Class
RealtimeFeatureClassDefinition Members

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