EnumConvert.cs

public enum TestEnum
{
    None =0,
    One = 1,
    Two = 2
}
var zero = Enum<TestEnum>.GetValue<int>( TestEnum.None );
var one = Enum<TestEnum>.GetValue<int>( TestEnum.One );
var two = Enum<TestEnum>.GetValue<int>( TestEnum.Two );
var nine = Enum<TestEnum>.GetValue<int>( TestEnum.One | TestEnum.Eight );

#region Using Directives

using System;
using System.ComponentModel;

#endregion

namespace Corp.MeterDataSync
{
    public static class Enum<T>
    {
        private static readonly Type _baseType = typeof (T);

        public static T GetValue<T>( object value )
        {
            var converter = new EnumConverter( _baseType );
            return (T) converter.ConvertFrom( value.ToString() );
        }
    }
}

It is the System.ComponentModel.EnumConverter class.

Cool, hadn't seen that one before, only came to C# about six months ago so my knowledge of the core is a little patchy.