how to throw exception?

in C # , we can using system and then throw exception.
But in unity, is there any classes can use ?
give me the link in the api manual.

 

Look into the debug api: http://docs.unity3d.com/ScriptReference/Debug.html

 

It has LogException ()

 

I believe the usual c# syntax works. It should print out to the console, at least I'm pretty sure.

Code (CSharp):

1. throw new Exception();

 

The usual syntax does indeed work, just add

Code (csharp):

1. using System;

at the top.

You can however, also use Debug.LogException and pass in an exception object, or use Debug.LogError and pass in a string with a message. Note though, that the last option doesnt abort execution and resumes with the next statement (which could end up throwing another, built-in, exception)

 

can using system be used in other platform except windows?

 

It has nothing whatsoever to do with Windows. All it does is import the System namespace; you don't need it for anything if you qualify stuff like System.Whatever anyway. It's just a coding convenience.

--Eric

 

but I guess that the unity can't support the whole System NameSpace
in my mind if unity support one namespace , it must can compile and build it to all the platform such as PS4 XB1 Win7 wii....

so I just not sure if unity support it

 

The System namespace like most others, with a few exceptions, are usable on all platforms.

 

Not everything in System is included, which means the not-included stuff doesn't work on Windows either...Unity uses Mono, not .NET (except on WP8).

--Eric