Generic number validation

Question

I've got a method like this:

public static bool IsPercentage<T>(T value) where T : IComparable
{
    return value.CompareTo(0) >= 0 && value.CompareTo(1) <= 0;
}

I would like to use this to validate if any number falls in the range 0 <= N <= 1. However this only works with integers since CompareTo only operates on equal types. Is there a different way to do this?

Answer 1

well you could use Convert.ToDecimal, then you don't need to be generic:

public static bool IsPercentage(Object value)
{
    decimal val = 0;
    try
    {
        val = Convert.ToDecimal(value);
    }
    catch
    {
        return false;
    }
    return val >= 0m && val <= 1m;
}