我有一个名为MyObject的对象,它有几个属性. MyList是MyObject的列表,我使用linq查询填充,然后将MyList序列化为json.我最终得到这样的东西
List<MyObject> MyList = new List<MyObject>();
MyList = TheLinqQuery(TheParam);
var TheJson = new System.Web.Script.Serialization.JavaScriptSerializer();
string MyJson = TheJson.Serialize(MyList);
我想要做的是仅序列化MyObject的一部分.例如,我可能有Property1,Property2 …… Propertyn,我希望MyJson只包含Property3,Property5和Property8.
我想到了一种方法,通过创建一个只有我想要的属性的新对象,然后从那里创建一个新的序列化列表.这是最好的方式还是有更好/更快的方式？
谢谢.
解决方法
// simple dummy object just showing what "MyObject" could potentially be
public class MyObject
{
public String Property1;
public String Property2;
public String Property3;
public String Property4;
public String Property5;
public String Property6;
}
// custom converter that tells the serializer what to do when it sees one of
// the "MyObject" types. Use our custom method instead of reflection and just
// dumping properties.
public class MyObjectConverter : JavaScriptConverter
{
public override object Deserialize(IDictionary<string,object> dictionary,Type type,JavaScriptSerializer serializer)
{
throw new ApplicationException("Serializable only");
}
public override IDictionary<string,object> Serialize(object obj,JavaScriptSerializer serializer)
{
// create a variable we can push the serailized results to
Dictionary<string,object> result = new Dictionary<string,object>();
// grab the instance of the object
MyObject myobj = obj as MyObject;
if (myobj != null)
{
// only serailize the properties we want
result.Add("Property1",myobj.Property1);
result.Add("Property3",myobj.Property3);
result.Add("Property5",myobj.Property5);
}
// return those results
return result;
}
public override IEnumerable<Type> SupportedTypes
{
// let the serializer know we can accept your "MyObject" type.
get { return new Type[] { typeof(MyObject) }; }
}
}
然后你在哪里序列化：
// create an instance of the serializer
JavaScriptSerializer serializer = new JavaScriptSerializer();
// register our new converter so the serializer knows how to handle our custom object
serializer.RegisterConverters(new JavaScriptConverter[] { new MyObjectConverter() });
// and get the results
String result = serializer.Serialize(MyObjectInstance);
