C#: Try, Catch not catching exception

Question

I have a try catch that should catch an exception if the string has invalid characters for a Windows path.

 try { Result = Path.GetFullPath(pathname); } catch (System.IO.IOException e) { CatchResult = (e); }

But an exception is still being thrown, and the application crash's. Any ideas?

What is the exception which is being thrown?

ClickRick
– ClickRick

2014-05-20 22:48:29 +00:00
Commented May 20, 2014 at 22:48 — ClickRick
– ClickRick, Commented May 20, 2014 at 22:48

Hamlet Hakobyan · Accepted Answer · 2014-05-20 22:48:46Z

2

The MSDN states that the Path.GetFullPath() throws 5 kinds of exceptions but not IOException. You must catch the correct type of exception. See documentation for more information.

answered May 20, 2014 at 22:48

Hamlet Hakobyan

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1 Comment

Scott Chamberlain Over a year ago

PathTooLongException is derived from IOException, so his catch would get that one.

Mark Hall · Accepted Answer · 2014-05-20 22:54:25Z

Path.GetFullPath(string) does not throw IOException as one of it's available exceptions.

Please review the Exception list at Path.GetFullPath MSDN

Exceptions thrown:

ArgumentException
SecurityException
ArgumentNullException
NotSupportedException
PathTooLongException.

To be fair, PathTooLongException is a descendant of IOException, so the catch would get that one.

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