Rethrowing an exception

Hi maybe I am dumb, I am just new in .net technology. I wonder how can I rethrow an exception in C# .net and in VB.net ?? Thank's

Re: Rethrowing an exception

There is a Throw statement (throw in C#). Catch the exception, and then throw it if you like.

Re: Rethrowing an exception

well in the catch block u can again throw exception by using new operator

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catch(Exception e){
        thorw (new Exception("some msg");
}
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u can also store the original exception by assign InnerException property.

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catch(Exception e){                              |-----------------------------this is the innerException
        thorw (new Exception("some msg",e);
}
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Re: Rethrowing an exception

I think it's:

try
{
    //...
}
catch (whatever)
{
    throw; //rethrow
}

Of course I could be wrong (I've never actually had to use this in C# yet).

Re: Rethrowing an exception

Just for the record, both answers are correct ways to re-throw a caught exception -- the only caveat being that it is almost never appropriate to "eat" the original exception (except possibly in certain scenarios where revealing exception details may have security ramifications like revealing the structure of your SQL tables, or something -- just remember that if you eat the exception, then your customers won't be able to give you the real error message when they report the problem) when throwing from a catch block. You should almost always pass the existing exception to the new one's constructor (and any custom Exception classes you write should allow an inner exception to be passed to the constructor). -- Ryan Milligan