[csharp] bool IsNumeric(Type type)

 /*
 "C:\Program Files (x86)\MSBuild\14.0\Bin\csc.exe" /out:IsNumericType.exe IsNumericType.cs && start "IsNumericType.exe" IsNumericType.exe
 IsNumeric(System.Boolean) -> False
 IsNumeric(System.String) -> False
 IsNumeric(System.Char) -> False
 IsNumeric(System.Byte) -> True
 IsNumeric(System.Byte[]) -> False
 IsNumeric(System.DateTime) -> False
 IsNumeric(System.Int32) -> True
 IsNumeric(System.Single) -> True
 IsNumeric(System.Decimal) -> True
 IsNumeric(System.DayOfWeek) -> True
 IsNumeric(System.Guid) -> False
 IsNumeric(System.IntPtr) -> False
 IsNumeric(System.Nullable`1[[System.Int32, mscorlib, Version=4.0.0.0, Culture=ne
 utral, PublicKeyToken=b77a5c561934e089]]) -> False
 IsNumeric(System.Action) -> False
 Press any key to EXIT...
 */
 using System;
 using System.Reflection;

 static class Program {
     static bool IsNumeric(Type type) {
         switch (Type.GetTypeCode(type)) {
             case TypeCode.Byte:
             case TypeCode.SByte:
             case TypeCode.UInt16:
             case TypeCode.UInt32:
             case TypeCode.UInt64:
             case TypeCode.Int16:
             case TypeCode.Int32:
             case TypeCode.Int64:
             case TypeCode.Decimal:
             case TypeCode.Double:
             case TypeCode.Single:
                 return true;
             default:
                 return false;
         }
     }

     public static void Main() {
         Test(typeof(bool));
         Test(typeof(string));
         Test(typeof(char));
         Test(typeof(byte));
         Test(typeof(byte[]));
         Test(typeof(DateTime));
         Test(typeof(int));
         Test(typeof(float));
         Test(typeof(Decimal));
         Test(typeof(DayOfWeek));
         Test(typeof(Guid));
         Test(typeof(IntPtr));
         Test(typeof(int?));
         Test(typeof(Action));
         Console.Write("Press any key to EXIT...");
         Console.ReadKey(true);
     }

     static void Test(Type type) {
         Console.WriteLine("IsNumeric({0}) -> {1}", type.FullName, IsNumeric(type));
     }

 }