Newtonsoft.Json反序列化base64映像失败

将该字段读取为字符串，

使用

Convert.Frombase64String

使用获取图像

Bitmap.FromStream(new MemoryStream(bytearray));

编辑

您可以在自定义 转换器 的帮助下执行图像序列化/反序列化 __

public class AClass{    public Bitmap image;    public int i;}Bitmap bmp = (Bitmap)Bitmap.FromFile(@"......");var json = JsonConvert.SerializeObject(new AClass() { image = bmp, i = 666 },       new ImageConverter());var aclass = JsonConvert.DeserializeObject<AClass>(json, new ImageConverter());

这是

ImageConverter

public class ImageConverter : Newtonsoft.Json.JsonConverter{    public override bool CanConvert(Type objectType)    {        return objectType == typeof(Bitmap);    }    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)    {        var m = new MemoryStream(Convert.Frombase64String((string)reader.Value));        return (Bitmap)Bitmap.FromStream(m);    }    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)    {        Bitmap bmp = (Bitmap)value;        MemoryStream m = new MemoryStream();        bmp.Save(m, System.Drawing.Imaging.ImageFormat.Jpeg);        writer.Writevalue(Convert.Tobase64String(m.ToArray()));    }}