http://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660So you realize why it is important to try to reduce them :-) http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment12http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment12Tue, 19 May 2009 13:22:56 GMTOren - yes I do realise how many support calls a good error can save :-) [mrpmorris.blogspot.com/.../...ance-of-clarity.html](http://mrpmorris.blogspot.com/2008/12/importance-of-clarity.html) http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment11http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment11Tue, 19 May 2009 12:58:53 GMTPeter, You do realize how many support calls a good error can save you? http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment10http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment10Tue, 19 May 2009 10:04:22 GMTI wouldn't bother at all to be honest. If someone is going to delete files I would let the app crash. Maybe the unhandled exception dialog could suggest re-installing the file and if the problem persists they should send the bug report on to you. http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment9http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment9Tue, 19 May 2009 09:06:14 GMTAhh nevermind i thought it was some kind of assert to "protect" your files in addition to your licensing scheme. I should go to sleep :x http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment8http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment8Sun, 17 May 2009 18:32:37 GMTSet, Please _read_ it. Then guess about why I need it http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment7http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment7Sun, 17 May 2009 18:06:36 GMTHmm wouldn't reflector + deblector + reflexil make it trivial to bypass this? or i'm missing something? http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment6http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment6Sun, 17 May 2009 18:01:58 GMTYip, I've done similar assertions, as well as doing permission assertions. e.g. Try running NHProf under Intranet/Internet Zone policies. http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment5http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment5Sun, 17 May 2009 17:45:00 GMTAyende, not surprisingly, at the early stage of NDepend I wrote a similar post. But we try to go further by making sure all assemblies are here with all correct version in all correct location: [codebetter.com/.../...tallation-in-production.aspx](http://codebetter.com/blogs/patricksmacchia/archive/2007/07/19/prevent-corrupted-installation-in-production.aspx)http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment4http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment4Sun, 17 May 2009 17:15:15 GMTKrzysztof, The Assert is also responsible for alerting the user http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment3http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment3Sun, 17 May 2009 13:49:37 GMTI don't think you should do that - simply close the app without any notification for the user. You should output a message telling a user _why_ you are closing. http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment2http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment2Sun, 17 May 2009 13:19:39 GMTYeah it's a much different world than corporate clients that's for sure. The precautionary steps required are ten-fold in order to prevent an avalanche of false positive bug reports and associated problems. I say, bind 'em up and lock 'em down. If your product still runs then your user will have a pleasant experience and be grateful to you, otherwise barf early and often otherwise the user will falsely cuss you like they do Microsoft. http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment1http://ayende.com/4017/the-things-that-you-have-to-do-to-protect-your-application#comment1Sun, 17 May 2009 13:18:18 GMT