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因此，在閱讀關於Json.NET無法（去）序列化Brush類型的各種其他問題和答案後，很明顯我需要我自己的JsonConverter。然而，我卡住的地方是我使用中間對象來處理數據，因爲它是（de）序列化的，並且由於根據筆刷類型存在各種類型的對象，我假設我需要將類型信息存儲在Json中，但是使用[JsonProperty(TypeNameHandling = TypeNameHandling.All)]不起作用。使用JsonConverter來序列化/反序列化各種'筆刷'類型
我的轉換器：
public class BrushJsonConverter : JsonConverter
{
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
object SerializableBrush = null;
if (value is SolidColorBrush)
SerializableBrush = new SerializableColorBrush(value as SolidColorBrush);
var jo = JObject.FromObject(SerializableBrush);
jo.WriteTo(writer);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue,
JsonSerializer serializer)
{
// Load JObject from stream
var jObject = JObject.Load(reader);
dynamic SerializableBrush = JsonConvert.DeserializeObject(jObject.ToString());
if (SerializableBrush is SerializableColorBrush)
return (SerializableBrush as SerializableColorBrush).ToBrush();
else if (SerializableBrush is SerializableImageBrush)
return (SerializableBrush as SerializableImageBrush).ToBrush();
else return null;
}
public override bool CanConvert(Type objectType)
{
return typeof(Brush).IsAssignableFrom(objectType);
}
}
我穿針引線對象：
class SerializableColorBrush
{
public Color Color{ get; set; }
public SerializableColorBrush(SolidColorBrush Brush)
{
this.Color = Brush.Color;
}
public SolidColorBrush ToBrush()
{
SolidColorBrush brush = new SolidColorBrush(this.Color);
return brush;
}
}
class SerializableImageBrush
{
public ImageSource ImageSource { get; set; }
public TileMode TileMode { get; set; }
public Stretch Stretch { get; set; }
public AlignmentX AlignmentX { get; set; }
public AlignmentY AlignmentY { get; set; }
public SerializableImageBrush(ImageBrush Brush)
{
this.ImageSource = Brush.ImageSource;
this.TileMode = Brush.TileMode;
this.Stretch = Brush.Stretch;
this.AlignmentX = Brush.AlignmentX;
this.AlignmentY = Brush.AlignmentY;
}
public ImageBrush ToBrush()
{
ImageBrush brush = new ImageBrush();
brush.ImageSource = ImageSource;
brush.TileMode = TileMode;
brush.Stretch = Stretch;
brush.AlignmentX = AlignmentX;
brush.AlignmentY = AlignmentY;
return brush;
}
}
一個例子屬性被序列化：
private Brush _WindowBG = SystemColors.AppWorkspaceBrush;
[JsonConverter(typeof(BrushJsonConverter))]
[JsonProperty(TypeNameHandling = TypeNameHandling.All)]
public Brush WindowBG { get { return _WindowBG; } set { if (value != _WindowBG) { _WindowBG = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("WindowBG")); } } }
我在哪裏誤入歧途？我甚至用這種方法走向正確的方向？
最終結果是我試圖將我的應用程序的主題數據存儲到json中，並將各種畫筆設置爲顏色，圖像或漸變（尚未包括在內）。