Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
233 views
in Technique[技术] by (71.8m points)

c# - Is there a situation in which Dispose won't be called for a 'using' block?

This was a telephone interview question I had: Is there a time when Dispose will not be called on an object whose scope is declared by a using block?

My answer was no - even if an exception happens during the using block, Dispose will still be called.

The interviewer disagreed and said if using is wrapped in a try-catch block then Dispose will not be called by the time you enter the catch block.

This goes contrary to my understanding of the construct, and I haven't been able to find anything that backs up the interviewers point of view. Is he correct or might I have misunderstood the question?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Four things that will cause Dispose to not be called in a using block:

  1. A power failure on your machine when inside the using block.
  2. Your machine getting melted by an atomic bomb while in the inside of the using block.
  3. Uncatchable exceptions like StackOverflowException, AccessViolationException and possibly others.
  4. Environment.FailFast

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...