using System;
using System.Reflection;

namespace IStation.WinFrmUI
{
    public class DeepCopyHelper
    {

        public static T DeepCopy<T>(T obj)
        {
            //如果是字符串或值类型则直接返回
            if (obj is string || obj.GetType().IsValueType) return obj;

            object retval = Activator.CreateInstance(obj.GetType());
            FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
            foreach (FieldInfo field in fields)
            {
                try { field.SetValue(retval, DeepCopy(field.GetValue(obj))); }
                catch { }
            }
            return (T)retval;
        }


        /*  public T DeepCopy<T>(T obj)
          {
              object retval;
              using (MemoryStream ms = new MemoryStream())
              {
                  XmlSerializer xml = new XmlSerializer(typeof(T));
                  xml.Serialize(ms, obj);
                  ms.Seek(0, SeekOrigin.Begin);
                  retval = xml.Deserialize(ms);
                  ms.Close();
              }
              return (T)retval;
          }

         
          public static T DeepCopy<T>(T obj)
          {
              object retval;
              using (MemoryStream ms = new MemoryStream())
              {
                  BinaryFormatter bf = new BinaryFormatter();
                  //序列化成流
                  bf.Serialize(ms, obj);
                  ms.Seek(0, SeekOrigin.Begin);
                  //反序列化成对象
                  retval = bf.Deserialize(ms);
                  ms.Close();
              }
              return (T)retval;
          }

          //利用silverlight DataContractSerializer实现，用于在silverlight 客户端使用
          public static T DeepCopy<T>(T obj)
          {
              object retval;
              using (MemoryStream ms = new MemoryStream())
              {
                  DataContractSerializer ser = new DataContractSerializer(typeof(T));
                  ser.WriteObject(ms, obj);
                  ms.Seek(0, SeekOrigin.Begin);
                  retval = ser.ReadObject(ms);
                  ms.Close();
              }
              return (T)retval;
          }*/





    }
}