Here are some books on GIS application development which I recently came across on surfing. Here are the details.
Programming ASP.NET for ArcGIS Server (English) – (ISBN: 9781418018757)
Web Mapping Illustrated Using Open Source GIS Toolkits
Beginning MapServer: Open Source GIS Development
Personally, I haven’t read any of these books listed above. If anyone has free copy (e-book) pl pass it on 
Tags: ArcGIS Server, ASP.NET, GIS Books, OpenSource GIS
