In this third part of my series of articles about the ADO.NET Entity Framework I will demonstrate how to add and modify data, use change tracking and handle concurrency conflicts. I have also implemented a Dump() extension method which can be useful for displaying all change tracking information.

• Add, update and delete entities
  • Update (modify) an entity
  • Add (create) and entity
  • Add (create) entity with associated entities
  • Delete an entity
• Concurrency handling
  • Set ConcurrencyMode
  • Resolve concurrency conflicts
• Change tracking
  • ObjectStateManager
  • Dump() & DumpAsHtml() extension methods
  • NoTracking option