RE: Throwing exception question...

Ben Chase — Fri, 11 Aug 2006 16:44:33 GMT

Yes, it does also apply to VB.NET. You can use Throw without specifying the exception to keep it from clearing the stack trace.

Throwing exception question...

StarkMike — Fri, 11 Aug 2006 16:21:02 GMT

Here is an excerpt from a book called: "Visual Studio .NET Tips and Tricks" By Minh T. Nguyen

Rethrowing the Same Exception

Whenever an exception needs to be logged, developers tend to use code similar to the
following to log an exception without eating it up:

Try
{...}
catch (Exception ex) {
Log(ex);
throw ex;
}

This code works, and the exception won’t be eaten up because it’s being rethrown at the end. However, developers don’t often realize that rethrowing the same exception in this way causes .NET to clear the exception’s stack trace. When you inspect the exception’s stack trace property it will seem as though the exception was originally thrown for the first time inside that catch block.

To throw the same exception correctly in a catch block, simply use “throw;” as follows:
Try
{...}
catch (Exception ex) {
Log(ex);
throw;
}

This rethrows the same exception that was just caught without clearing the stack trace.

His example is in C++ or C#... does what he's saying also apply to VB .NET?

Thanks

StrataFrame Forum / General .NET Discussion / .NET Forums / Throwing exception question... / Latest Posts

RE: Throwing exception question...

Throwing exception question...