Question

Is it the same when I use this:

catch(Exception e)
{
    throw new Exception("some Exception", e);
}

and this:

catch(Exception e)
{
   throw new Exception("some Exception", e.InnerException);
}

or Di I am missing something?

Answer 1

In your second example you are discarding the caught exception and are using its inner exception instead. You would normally code as you have in the first example.

In the first case, the caught exception (e) becomes the InnerException of the new exception you are throwing:

catch(Exception e)
{
    throw new Exception("some Exception", e);
}

In the second case you are using the InnerException of e, and the data from e is lost:

catch(Exception e)
{
   throw new Exception("some Exception", e.InnerException);
}