.NET[C#]中实现实体对象深拷贝(克隆/复制)的几种方法,总有一种适合你。
using System;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
/// <summary>
/// 参考 http://www.codeproject.com/KB/tips/SerializedObjectCloner.aspx
/// </summary>
public static class ObjectCopier
{
public static T Clone<T>(T source)
{
if (!typeof(T).IsSerializable)
{
throw new ArgumentException("The type must be serializable.", "source");
}
if (Object.ReferenceEquals(source, null))
{
return default(T);
}
IFormatter formatter = new BinaryFormatter();
Stream stream = new MemoryStream();
using (stream)
{
formatter.Serialize(stream, source);
stream.Seek(0, SeekOrigin.Begin);
return (T)formatter.Deserialize(stream);
}
}
}
public static T CloneJson<T>(this T source)
{
if (Object.ReferenceEquals(source, null))
{
return default(T);
}
var deserializeSettings = new JsonSerializerSettings {ObjectCreationHandling = ObjectCreationHandling.Replace};
return JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(source), deserializeSettings);
}
public static T DeepCopyByReflect<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, DeepCopyByReflect(field.GetValue(obj))); }
catch { }
}
return (T)retval;
}
public static T DeserializeXML<T>(string xmlData) where T:new()
{
if (string.IsNullOrEmpty(xmlData))
return default(T);
TextReader tr = new StringReader(xmlData);
T DocItms = new T();
XmlSerializer xms = new XmlSerializer(DocItms.GetType());
DocItms = (T)xms.Deserialize(tr);
return DocItms == null ? default(T) : DocItms;
}