Code-Function：深度复制

using System;

namespace Sp.Common
{
    public class FunctionHelper
    {
        /// <summary>
        /// 深度复制
        /// </summary>
        /// <typeparam name="T">The type of object being copied.</typeparam>
        /// <param name="source">The object instance to copy.</param>
        /// <returns>The copied object.</returns>
        public static T Clone<T>(T source)
        {
            if (!typeof(T).IsSerializable)
                throw new ArgumentException("The type must be serializable.", "source");

            // Don‘t serialize a null object, simply return the default for that object
            if (Object.ReferenceEquals(source, null))
                return default(T);

            System.Runtime.Serialization.IFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
            System.IO.Stream stream = new System.IO.MemoryStream();
            using (stream)
            {
                formatter.Serialize(stream, source);
                stream.Seek(0, System.IO.SeekOrigin.Begin);
                return (T)formatter.Deserialize(stream);
            }
        }

    }
}