JsonConvert.DeserializeObject 保留属性空

Question

TLDR：如果反序列化对象的所有字段都保持 null，没有任何异常，请检查基类是否具有 [DataContract] 属性，这使得 Json.net 忽略没有 [DataMember] 的每个属性。

很抱歉代码量很大，但我无法缩小导致问题的原因。

我有一个带有类 AssetViewModel 数组的 json 对象

[{
    "id":117,
    "name":"BMP",
    "creator":null,
    "extension":".bmp",
    "creationDate":"2019-03-31T23:18:20.8080488Z",
    "modificationDate":"2019-03-31T23:18:21.3191844Z",
    "size":1440056,
    "isDeleted":false,
    "version":0,
    "hasSinglePreview":true,
    "hasCollagePreview":false,
    "customPreviews":0,
    "group":null,
    "collection":null,
    "project":null,
    "tags":[]
}]

资产视图模型：

public class AssetViewModel : IAsset
{
    public int Id { get; set; }
    public string Name { get; set; }
    public IUser Creator { get; set; }
    public string Extension { get; set; }
    public DateTime CreationDate { get; set; }
    public DateTime ModificationDate { get; set; }
    public long Size { get; set; }
    public bool IsDeleted { get; set; }
    public int Version { get; set; }
    public bool HasSinglePreview { get; set; }
    public bool HasCollagePreview { get; set; }
    public int CustomPreviews { get; set; }
    public IGroup Group { get; set; }
    public ICollection Collection { get; set; }
    public IProject Project { get; set; }
    public ICollection<ITag> Tags { get; set; }
}

如果我用反序列化它，见下文，它工作正常。

var result = JsonConvert.DeserializeObject<IEnumerable<AssetViewModel>>(content);

但是对于类 AssetViewModel2，它不会：

var result = JsonConvert.DeserializeObject<IEnumerable<AssetViewModel2>>(content);
public class AssetViewModel2 : PropertyChangedBase
{
    private CollectionViewModel _collection;
    private DateTime _creationDate;
    private UserViewModel _creator;
    private int _customPreviews;
    private string _extension;
    private GroupViewModel _group;
    private bool _hasCollagePreview;
    private bool _hasSinglePreview;
    private int _id;
    private bool _isDeleted;
    private DateTime _modificationDate;
    private string _name;
    private ProjectViewModel _project;
    private long _size;
    private BindableCollection<TagViewModel> _tags = new BindableCollection<TagViewModel>();
    private int _version;
    public int Id
    {
        get => _id;
        set
        {
            if (_id == value) return;
            _id = value;
            NotifyOfPropertyChange();
        }
    }
    public string Name
    {
        get => _name;
        set
        {
            if (_name == value) return;
            _name = value;
            NotifyOfPropertyChange();
        }
    }
    public UserViewModel Creator
    {
        get => _creator;
        set
        {
            if (_creator == value) return;
            _creator = value;
            NotifyOfPropertyChange();
        }
    }
    public string Extension
    {
        get => _extension;
        set
        {
            if (_extension == value) return;
            _extension = value;
            NotifyOfPropertyChange();
        }
    }
    public DateTime CreationDate
    {
        get => _creationDate;
        set
        {
            if (_creationDate == value) return;
            _creationDate = value;
            NotifyOfPropertyChange();
        }
    }
    public DateTime ModificationDate
    {
        get => _modificationDate;
        set
        {
            if (_modificationDate == value) return;
            _modificationDate = value;
            NotifyOfPropertyChange();
        }
    }
    public long Size
    {
        get => _size;
        set
        {
            if (_size == value) return;
            _size = value;
            NotifyOfPropertyChange();
        }
    }
    public bool IsDeleted
    {
        get => _isDeleted;
        set
        {
            if (_isDeleted == value) return;
            _isDeleted = value;
            NotifyOfPropertyChange();
        }
    }
    public int Version
    {
        get => _version;
        set
        {
            if (_version == value) return;
            _version = value;
            NotifyOfPropertyChange();
        }
    }
    public bool HasSinglePreview
    {
        get => _hasSinglePreview;
        set
        {
            if (_hasSinglePreview == value) return;
            _hasSinglePreview = value;
            NotifyOfPropertyChange();
        }
    }
    public bool HasCollagePreview
    {
        get => _hasCollagePreview;
        set
        {
            if (_hasCollagePreview == value) return;
            _hasCollagePreview = value;
            NotifyOfPropertyChange();
        }
    }
    public GroupViewModel Group
    {
        get => _group;
        set
        {
            if (_group == value) return;
            _group = value;
            NotifyOfPropertyChange();
        }
    }
    public CollectionViewModel Collection
    {
        get => _collection;
        set
        {
            if (_collection == value) return;
            _collection = value;
            NotifyOfPropertyChange();
        }
    }
    public ProjectViewModel Project
    {
        get => _project;
        set
        {
            if (_project == value) return;
            _project = value;
            NotifyOfPropertyChange();
        }
    }
    public BindableCollection<TagViewModel> Tags
    {
        get => _tags;
        set
        {
            if (_tags == value) return;
            _tags = value;
            NotifyOfPropertyChange();
        }
    }
    public int CustomPreviews
    {
        get => _customPreviews;
        set
        {
            if (_customPreviews == value) return;
            _customPreviews = value;
            NotifyOfPropertyChange();
        }
    }
}

属性是相同的，只是在此类中，它们具有用于 WPF 绑定的 NotifyOfPropertyChange(( 的支持字段。我将其中一些更改为具体类型，因为我认为这可能会造成一些麻烦，但它没有帮助。

如果使用 AssetViewModel2 反序列化，则结果的所有属性都保持 null，并且我没有任何异常。

我在 AssetViewModel2 中做错了什么？

Answer 1

问题出在基类中。我正在使用Caliburn micros PropertyChangedBase。该类具有 [DataContract] 属性，这使得有必要将 [DataMember] 属性添加到属性中，这些属性应被反序列化。

解决 方案：

• 复制不带 [DataContract] 属性的类，并将 [JsonIgnore] 添加到 IsNotifying 或
• 将 [DataMember] 属性添加到应反序列化的每个属性。