If I wanted to create an add-in for ArcGIS that exported the styling of a layer to SLD how much work would it be and what languages could I use?
More info:
I'm an experienced programmer, and have done a lot of coding for GIS systems but am not a user of ESRI products and have never tried writing an extension for any of their products.
I would only need to export basic styling to SLD, not write a comprehensive tool that works for everything.