Skip to content

Latest commit

 

History

History
33 lines (19 loc) · 1.75 KB

readme.md

File metadata and controls

33 lines (19 loc) · 1.75 KB

Service feature table (on interaction cache)

Display a feature layer from a service using the on interaction cache feature request mode.

screenshot

Use case

ServiceFeatureTable supports three request modes, which define how features are requested from the service and stored in the local table. The feature request modes have different performance characteristics. Use On interaction cache in scenarios with large amounts of infrequently edited data. See Table performance concepts to learn more.

How it works

  1. Set the ServiceFeatureTable.FeatureRequestMode property of the service feature table to ON_INTERACTION_CACHE before the table is loaded.
  2. Add the table to the map using a FeatureLayer; features will be requested for the visible extent as the user pans and zooms.

Relevant API

  • FeatureLayer
  • FeatureRequestMode.OnInteractionCache
  • ServiceFeatureTable
  • ServiceFeatureTable.FeatureRequestMode

About the data

The U.S. National Bridge Inventory describes 600,000 bridges in the United States. The sample uses a modified copy of the inventory hosted in ArcGIS Online. The sample opens with an initial visible extent centered over Bridgeport, CT.

Additional information

On interaction cache is the default feature request mode. Features are requested automatically for the visible extent as the users pans and zooms the map. If the user returns to an area where features have previously been requested, those features won't be requested again.

Tags

cache, feature request mode, performance