using System;

using System.Collections.Generic;           

public class Program

{

    public static void Main()

    {

        var roles1 = RoleModels.Master | RoleModels.Member;

        List<String> rolesStrings = new List<String> { "mAster", "Member" };

        bool hasFlag = true;

        foreach (var role in rolesStrings)

        {

            RoleModels enumValue;

​

            if (!(Enum.TryParse(role, true, out enumValue) && roles1.HasFlag(enumValue)))

            {

               hasFlag = false;

               break;

            }

       }

        Console.WriteLine(hasFlag);

    }

}

​

[Flags]

    public enum RoleModels

    {

        Master = 1 << 0,

        Editor = 1 << 1,

        Member = 1 << 2

    }