#852 – How Exceptions Work

An exception is something that happens in your application at run-time that is unexpected and which requires special logic in order for the application to continue executing normally.

Here’s how exceptions work:

  • A particular piece of code calls a method, which in turn may call other methods
  • The call stack keeps track of the calling sequence that led to the currently executing method
  • At any given time, the code that is executing may decide to throw an exception, indicating that something unexpected happened
  • The method throwing an exception stops what it’s doing and control returns to the calling method
  • The calling method may decide to catch the exception, i.e. execute some code in response to it
  • If the calling method doesn’t catch the exception, control continues back up the stack until a method is found that does catch the exception
  • If no method catches the exception, it is unhandled

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

2 Responses to #852 – How Exceptions Work

  1. Pingback: Dew Drop – May 28, 2013 (#1,555) | Alvin Ashcraft's Morning Dew

  2. I’d highly recommend exceptionless as an exception reporting service (http://exceptionless.com/). You can easily track and fix all of your applications exceptions.

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