Feature retrieval

Feature layers within the ArcGIS Viewer for Silverlight can be configured to specify the mode used to retrieve features. You can retrieve all the features in a layer at once or only retrieve features within the current extent. The two options are described as follows:

You can configure feature retrieval for a layer as follows:

  1. Open the Configure Layers panel and select the layer to be configured.
  2. Right-click the layer and click Configure. Alternatively, click the Configure button at the bottom of the Configure Layers panel:
    Configure layer
  3. On the Configuring panel that appears, expand the Feature Retrieval group:

    • Select Get features within map area to enable retrieval of features within the current extent.
    • The Cache Size defines the maximum number of features the layer can retain. When the map extent is changed, features within the new extent are retrieved, and features that have previously been requested are retained. However, if the number of features in the layer exceeds the value defined for cache size, features will be removed from the layer to bring the number of features within the cache size value range. When this occurs, the oldest features are removed first.
      NoteNote:

      Features are only removed from the layer on the client; the data on the server remains unchanged.

1/26/2015