1 public class MiniDateTimeConverter : DateTimeConverterBase
 2         {
 3             public string DateTimeFormat { get; set; }
 4 
 5             private static IsoDateTimeConverter dtConverter = new IsoDateTimeConverter();
 6             public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
 7             {
 8                 dtConverter.DateTimeFormat = DateTimeFormat;
 9                 return dtConverter.ReadJson(reader, objectType, existingValue, serializer);
10             }
11 
12             public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
13             {
14                 serializer.StringEscapeHandling = StringEscapeHandling.EscapeNonAscii; // 解决中文不出现乱码的问题
15                 DateTime dateTime = (DateTime)value;
16                 if (value.GetType().FullName == "System.DBNull")// || dateTime.ToString("yyyy-MM-dd HH:mm:ss") == "1900-01-01 00:00:00")
17                 {
18                     writer.WriteValue(string.Empty);
19                 }
20                 else
21                 {
22                     dtConverter.DateTimeFormat = DateTimeFormat;
23                     dtConverter.WriteJson(writer, value, serializer);
24                 }
25             }
26 
27             public override bool CanRead
28             {
29                 get
30                 {
31                     return false;
32                 }
33             }
34             /// <summary>
35             /// 是否允许转换JSON字符串时调用
36             /// </summary>
37             public override bool CanWrite
38             {
39                 get
40                 {
41                     return true;
42                 }
43             }
44         }