GISquirrel API for Developers

GISquirrel includes an API that allows application developers to integrate its functionality into custom ArcGIS or ArcGIS Engine applications. The API is simple to use in both VBA and .Net applications. When combined with the ability to read/write directly to the underlying SQL Server or PostGIS database, this gives the ArcGIS application developer unprecedented power to create user-friendly and robust multi-user applications.

GISquirrel API documentationThe API makes four main operations simple:

  • Add an GISquirrel layer to the current map document (AddLayerToMap method)
  • Import a vector layer from the current map into SQL Server or PostGIS (ImportLayerFromMap method)
  • Start a multi-user editing session (StartEditing method)
  • Stop editing, saving edits if required (StopEditing method)

Some examples might include:

  • Add a tool to a custom toolbar to allow users to draw a polygon and popup a data entry form. The new data is saved into the SQL Server or PostGIS database.
  • Give users a simple tool for splitting or re-shaping features, preventing editing conflicts with other users.
  • Provide a tool for a data manager to validate or reject records that have been collected through a web interface.

For full details of the API methods, please download the help file to a local folder, extract the CHM file from the Zip archive, and double-click to open.

The GISquirrel API can be used for no extra cost, so long as each GISquirrel seat is licensed. However, if you want to re-sell applications incorporating GISquirrel, please contact us for a value-added reseller licence.

Note for .Net developers: you need to target .Net 3.5. ArcGIS 10.x itself doesn’t fully support .Net 4; if you edit its app.config file it will run plugins targeting .Net 4, but internally it’s 3.5. So it’s hardly ever a good idea to target .Net 4 when writing an ArcGIS plugin - there will be some overhead marshalling between .Net frameworks. GISquirrel has no (realistic) choice but to reference 3.5 because it still supports ArcGIS 9.3, which does not support .Net 4 at all.

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