how to convert item of a list to byte array code example

Example: hwo to convert list of custom class to a byte

using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

byte[] bytes = null;
BinaryFormatter bf = new BinaryFormatter();
using (MemoryStream ms = new MemoryStream())
{
	//categoryList is where you put the list that you want to convert
    bf.Serialize(ms, categoryList);
    bytes = ms.ToArray();
}