Content Comparison

/// UInt32 range is 0 to 4,294,967,295
/// Use the fastest hashing that has the least duplicates
const UInt32 m = 0x5bd1e995;
const Int32 r = 24;

[StructLayout(LayoutKind.Explicit)]
struct BytetoUInt32Converter
{
      [FieldOffset(0)]
      public Byte[] Bytes;

      [FieldOffset(0)]
      public UInt32[] UInts;
}

public static UInt32 HashItem<T>(T item)
{
      try{
          List<byte> byteList = new List<byte>();

          using (MemoryStream ms = new MemoryStream()){
              BinaryFormatter formatter = new BinaryFormatter();
              formatter.Serialize(ms, item);
              ms.Flush();
              ms.Position = 0;
              byte[] buffer = new byte[100];
                    while(true)
                    {
                        var numRead = ms.Read(buffer, 0, buffer.Length);
                        if (numRead == 0)
                            break;
                        else{
                            for(var i = 0; i < numRead; i++){ byteList.Add(buffer[i]); }
                        }
                    }
                }
                return Hash(byteList.ToArray());
            }
            catch{ return 0;}
        }