Nullable types: better way to check for null or zero in c#

Question

I\'m working on a project where i find i\'m checking for the following in many, many places:

if(item.Rate == 0 || item.Rate == null) { }

mo

Answer 1

public static bool nz(object obj)
{
    return obj == null || obj.Equals(Activator.CreateInstance(obj.GetType()));
}