Table of Contents (TOC) Map Control | NVision Solutions, Inc.

The Table of Contents (TOC) Map Control is designed to replace the ESRI default TOC map control. It adds queuing functionality to the map control. This functionality ensures all changes to the control on your website are processed. This control also adds real-time transparency functionality to all layers at run-time. On startup the control also prevents the user from immediately utilizing the control before the map services have had time to load. The benefits to using the custom Table of Contents control include the ability to ensure that clicks are not missed, which will prevent the Table of Contents from misaligning from the actual viewable layers on the map. By using a queuing system and waiting until the response posts back for toggling a layer, the control catches all user clicks and sends them all at once to the application for processing. Another benefit of this control is the ability to allow the user to toggle transparencies on layers dynamically. This can allow for a user to see features and graphics that are behind other features and graphics by toggling the transparency of layers to the user's preference.