Getting my head round Regex

[greatflash]

I am hopeful there is a Regex guru who can help me with this particular problem. I have not had a great amount of experience using regex, though am mostly fine with the simpler elements.

What I am trying to do is strip a certain element from a string that contains a full filename with bracketed data. The data I need to check for is in the format(s) of,

(Disc 1 of 2)
(disc 1)
(1/2)
(disc 1/2)

and variations of. These are unique and only one instance is present per string (or none)

I need to locate these and extract the first value (numerical), a '1' in the cases posted. This value I want to use to create a uniform format of the myrad of formats shown above.
The second number is not needed as I only want to create a string of the format

(Disc x)

Any help would be wonderful as I have been struggling with this for some time.

[greatflash]

I cannot modify the first post, but in the list of format(s) to search for, there should also have been

[Disc1of2]

[ricky_cpp]

Following code should extract first digit from your string

            Match m;
            string someString = "(Disc 1 of 2)";
            Regex r = new Regex(@"\d");
            m = r.Match(someString);
            string firstNumberAsString = m.Groups[0].ToString(); //You can then convert it into an integer.

[greatflash]

Addendum,

Though, also noting that not all bracketted areas are related to disc numbers. Some may contain revisions, regions, or other data. So, just trying to find a match pattern that works with the examples in the first post really (without grabbing non-matches).

[greatflash]

Thanks, but this will just find the first digit in the filename. I mentioned that I wanted to strip a certain element from a string that contains a full filename with bracketed data. I should really have given a better description rather than just the bracketed data I wished to match/search.

ie.

Baseball 2002 (Disk 1 of 2) (Europe)
Baseball 2002 (E) (1/2)
Baseball 2002 [disc1of2]
Baseball 2002 (Disc 17)

etc.

So, I need to grab the braketed area (sometimes in square brackets) and then take the first digit(s). This is where my knowledge comes completely unstuck. I am sure there is an elegent way to do this. Well... mostly sure.. lol