Question

I have been fighting with this little problem for a night and I couldn’t figure it out. All I want is have some enum elements with Hex value and convert a value to enum, but .NET somehow don’t think my enum is legal.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    public class CommandEnum
    {
        [Flags]
        public enum Command : byte
        {
            CMD_HAND_SHAKE = 0x0,
            CMD_SET_MAX_CURRENT = 0x1,
            CMD_SET_TEST_SPEED = 0xA
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            CommandEnum command;
            byte receiveByte = 0x0A;

            // Error: Type provided must be an Enum. Parameter name: enumType:
            command = (CommandEnum)Enum.ToObject(typeof(CommandEnum), receiveByte);  
        }
    }
}

What is wrong and how should I fix it?

Answer 1

You should use

command = (CommandEnum.Command)receiveByte;

and command should be defined as

ConnamdEnum.Command command

Generally, it looks like you do not need a wrapper class CommandEnum, you should just define enum Command