Microsoft ADO.NET Entity Framework Step by Step

Chapter 11. Dealing with exceptions

After completing the chapter, you’ll be able to

• Understanding exceptions

• Considering exception sources

• Handling connection string exceptions

• Dealing with query exceptions

• Dealing with other data exception types

• Understanding concurrency exceptions

When you discuss an exception, it’s always in regard to something unexpected. For example, an exception to a rule is a situation that the rule couldn’t anticipate. You do something different, in such a case, because the rule didn’t cover it. Application code encounters the same situation. Even the best developer (or development team) can’t anticipate every contingency. Situations will occur that defy even the best efforts at mitigation, causing an error. However, you aren’t ...