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ASP.NET > Learn ASP.NET > What is difference between "throw" and "throw ex" in...
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What is difference between "throw" and "throw ex" in .Net?

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Yes, there is a difference; 1) throw ex resets the stack trace (so your errors would appear to originate from HandleException) 2) throw doesn't - the original offender would be preserved.
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1.In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. 2. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace....
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1.In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. 2. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace read less
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IT Professional Trainer with above 15 years of experience into software IT training

Using Throw statement you can either throw a system exception or your own custom exception
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In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e....
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In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace read less
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throw= rethrow, you are returning/throwing original exception throw ex= throwing customized exception. i will change stack trace information as origin of exception ertc
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Throw: the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. in case of Throw ex. the original stack trace information will get override and you will lose the original exception stack tr...
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Throw: In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. Eg: try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw; } Throw...
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Throw: In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. Eg: try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw; } Throw ex: In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace. Eg: try { // do some operation that can fail } catch (Exception ex) { // do some local cleanup throw ex; } } read less
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Thow menas " Capturing and showing the history or trail of the error that means the point from where the error is raised so that you can go to the actual source of the error , its like contacting golden source so that you can correct it and it is the one of the best practices in .net also if you are...
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Thow menas " Capturing and showing the history or trail of the error that means the point from where the error is raised so that you can go to the actual source of the error , its like contacting golden source so that you can correct it and it is the one of the best practices in .net also if you are using any static code analysis tools like Gendarme / FxCop than it will show as an technical debt." Now Throw ex , it simply means that you are not concern about the source of the error but provide customize exception after handling it" If you want to learn more about the Technical Debt or TDD or code quality , please contact us. read less
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In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e....
read more
In Throw, the original exception stack trace will be retained. To keep the original stack trace information, the correct syntax is 'throw' without specifying an exception. In Throw ex, the original stack trace information will get override and you will lose the original exception stack trace. I.e. 'throw ex' resets the stack trace. read less
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throw re-throws the exception that was caught, and preserves the stack trace. throw ex throws the same exception, but resets the stack trace to that method. Unless you want to reset the stack trace (i.e. to shield public callers from the internal workings of your library), throw is generally the...
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throw re-throws the exception that was caught, and preserves the stack trace. throw ex throws the same exception, but resets the stack trace to that method. Unless you want to reset the stack trace (i.e. to shield public callers from the internal workings of your library), throw is generally the better choice, since you can see where the exception originated. read less
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