C# - how to determine whether a Type is a number

Question

Is there a way to determine whether or not a given .Net Type is a number? For example: System.UInt32/UInt16/Double are all numbers. I want to avoid a long switc

Answer 1

Don't use a switch - just use a set:

HashSet NumericTypes = new HashSet
{
    typeof(decimal), typeof(byte), typeof(sbyte),
    typeof(short), typeof(ushort), ...
};

EDIT: One advantage of this over using a type code is that when new numeric types are introduced into .NET (e.g. BigInteger and Complex) it's easy to adjust - whereas those types won't get a type code.