using System;

using System.Reflection;

using  System.ComponentModel;

public enum Unit

    {

        [Description("Метр")]    

        Meter = 1,

        [Description("Ватт")]

        Watt,

    }

​

​

​

public class Program

{

    public static string GetEnumDescription(Enum value)

    {

        FieldInfo fi = value.GetType().GetField(value.ToString());

        DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);

        if (attributes != null && attributes.Length > 0)

            return attributes[0].Description;

        else

            return value.ToString();

    }

    public static void Main()

    {

        Console.WriteLine(GetEnumDescription(Unit.Watt));

    }

}