Integer.TryParse - a better way?

Question

I find myself often needing to use Integer.TryParse to test if a value is an integer. However, when you use TryParse, you have to pass a reference variable to the function,

Answer 1

public static class Util {

    public static Int32? ParseInt32(this string text) {
        Int32 result;
        if(!Int32.TryParse(text, out result))
            return null;
        return result;
    }

    public static bool IsParseInt32(this string text) {
        return text.ParseInt32() != null;
    }

}