之前,我使用IDataContractSurrogate来序列化我的数据,但它与CPL(便携式类librairy)不兼容,所以我现在正在使用Newtonsoft。
但是,我必须将一个ObservableCollection类型转换为List with:
myobj [ { id:1, name="test1", value="test_1"}, { id:2, name="test2", value="test_2"}]
到myobj ["test1", "test2"],
有可能吗? 我试过这样:
public class ccrUser : DefaultContractResolver { // Newtonsoft.Json.Serialization.IContractResolver
private bool toSerialise;
public static readonly ccrUser Instance = new ccrUser(true);
/// <summary>Constructeur</summary>
/// <param name="pToSerialise">Indique le sens qui sera utlisé (les API ne donnent pas le même format en GET qu'elles attendent en POST).</param>
public ccrUser(bool pToSerialise) : base() { toSerialise = pToSerialise; }
protected override JsonContract CreateContract(Type objectType) {
var contract = base.CreateContract(objectType);
if ((toSerialise) && (objectType == typeof(ObservableCollection<tblGroup>))) {
//contract.Converter = new Newtonsoft.Json.Converters.CustomCreationConverter<string>();
return base.CreateArrayContract(objectType);
} else
return contract;
}
protected override List<MemberInfo> GetSerializableMembers(Type objectType) {
var defaultMembers = base.GetSerializableMembers(objectType);
if ((toSerialise) && (objectType == typeof(ObservableCollection<tblGroup>))) {
return defaultMembers;
} else
return defaultMembers;
}
protected override JsonConverter ResolveContractConverter(Type objectType) {
if (objectType == typeof(ObservableCollection<tblGroup>)) {
return null; // pretend converter is not specified
}
return base.ResolveContractConverter(objectType);
}
/// <summary>JSON value provider that always returns a static value</summary>
public class StaticValueProvider : IValueProvider {
private readonly object _staticValue;
public StaticValueProvider(object staticValue) { _staticValue = staticValue; }
public void SetValue(object target, object value) { throw new NotSupportedException(); }
public object GetValue(object target) { return _staticValue; }
}
protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization) {
JsonProperty property = base.CreateProperty(member, memberSerialization);
if ((toSerialise) && (property.PropertyType == typeof(ObservableCollection<tblGroup>))) {
}
return property;
}
}
但无法找到解决方案。
此致
答案 0 :(得分:0)
不是在序列化/反序列化过程中进行转换,而是可以序列化/反序列化另一个属性(另一种类型):
\w*\s\w*
// serialize only marked members
[JsonObject(MemberSerialization = MemberSerialization.OptIn)]
public class SerializableObject
{
// original property: not serialized
public TypeA PropertyA { get; set; }
[JsonProperty(nameof(PropertyA))]
public TypeB PropertyB
{
get
{
// convert PropertyA value to TypeB
return (TypeB)PropertyA;
}
set
{
// convert TypeB to TypeA and set PropertyA value
PropertyA = (TypeA)value;
}
}
}
(如果您愿意,可以是PropertyB
)仅用于将private
值序列化/反序列化为另一种类型。
答案 1 :(得分:0)
有一个编译错误,它无法解析List&lt;字符串&gt;到IEnumerable&lt; tblGroup&gt; :
[DataMember(Name ="groups")]
public List<string> groupsApi { get { return (from c in (ObservableCollection<tblGroup>)_groups select c.value).ToList(); } set { _groups = new ObservableCollection<tblGroup>(value); } }
public ObservableCollection<tblGroup> groups { get { return _groups; } set { _groups = value; } }