Different ways to cast an object

Question

Possible Duplicate:
casting vs using the ‘as’ keyword in the CLR

Hi,

when to cast an object and when to use "as".

e.g:
class a= (class)object
and when to use
class a = object as class.

Duplicate of http://stackoverflow.com/questions/496096/casting-vs-using-the-as-keyword-in-the-clr - this article goes in depth to the various ways of casting. — Rob Levine, Jul 29 '10 at 11:22
Yet another casting question. Please refer this - http://stackoverflow.com/questions/496096/casting-vs-using-the-as-keyword-in-the-clr — this. __curious_geek, Jul 29 '10 at 11:24

score 5 · Accepted Answer · answered Jul 29 '10 at 11:21

5

Using as is a safe option, as if the cast fails you do not get an exception, but the value returned is null.

If you want to get an exception when a cast is not possible, use ().

answered Jul 29 '10 at 11:21

Oded

score 0 · Answer 2 · answered Jul 29 '10 at 11:21

0

class a = object as class

this is not raise an exception in case it cannot cast and it wokrs only for reference types

answered Jul 29 '10 at 11:21

Arseny

score 0 · Answer 3 · answered Jul 29 '10 at 11:22

0

This article seems to sum it up well...

answered Jul 29 '10 at 11:22

Peter O'Callaghan

3 Answers3