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Difference between "throw" and "throw ex" in .NET View(s): 71109 What is difference between the "throw" and "throw ex" in .NET? Answer 1)   If you use "throw" statement, it preserve original error stack information. If you use "throw ex" statement, stack trace of the exception will be replaced with a stack trace starting at the re-throw point. So it is very important to just use the throw statement, rather than throw ex because it will give you more accurate error stack information. Answered by Mr. Ponna   Asked in:  Accenture   Expertise Level:  Experienced   Last updated on Monday, 26 May 2014 4/5 stars (76 vote(s))