Example packed Guid

PackedGuidExample.cs

    public class TenantAndUserKey : PackedGuidKey
    {
        public TenantAndUserKey()
        {
        }

        public TenantAndUserKey(Guid guid) : base(guid)
        {
        }

        public uint TenantId { get { return GetUint(0); } set { Set(value, 0); } }
        public int UserId { get { return GetInt(4); } set { Set(value, 4); } }
    }
    
    public abstract class PackedGuidKey
    {
        private byte[] bytes;

        public Guid Guid { get; private set; }

        public PackedGuidKey()
        {
            bytes = new byte[16];
            GenerateGuid();
        }

        public PackedGuidKey(Guid guid)
        {
            bytes = guid.ToByteArray();
            GenerateGuid();
        }

        private void GenerateGuid()
        {
            Guid = new Guid(bytes);
        }

        protected int GetInt(int startPosition)
        {
            return BitConverter.ToInt32(bytes, startPosition);
        }

        protected uint GetUint(int startPosition)
        {
            return BitConverter.ToUInt32(bytes, startPosition);
        }

        protected void Set(int value, int startPosition)
        {
            Array.Copy(BitConverter.GetBytes(value), 0, bytes, startPosition, sizeof(int));
            GenerateGuid();
        }

        protected void Set(uint value, int startPosition)
        {
            Array.Copy(BitConverter.GetBytes(value), 0, bytes, startPosition, sizeof(uint));
            GenerateGuid();
        }
    }