When should we use ref and out

Question

When should we actually use ref and out. I know the difference between the two. Before you can pass a ref parameter, you must assign it to a value. which is not compulsory in out.

But when should we use ref. ??

I read this, but didnt got, when should I use ref.

http://www.dotnetperls.com/ref

score 0 · Accepted Answer · answered Mar 22 '13 at 02:30

0

Here is an example:

    static void Main(string[] args)
    {

        int i = 1;

        foo(i);
        Console.Write(i); //i=1;

        Reffoo(ref i);
        Console.Write(i); //i=2;
    }

    static void Reffoo(ref int i)
    {
        i++;
    }

    static void foo(int i)
    {
        i++;
    }

answered Mar 22 '13 at 02:30

jacob aloysious

2,547
15
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@user2163048: Here in stackoverflow (any stackexchange sites), its a common practice that you Upvote if you find an answer useful. – jacob aloysious Mar 22 '13 at 02:43
Before u told...I did it bro..but it was showing error at that moment.. – user2163048 Mar 22 '13 at 02:44

When should we use ref and out

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