how to tell JsonSerializer to ignore all properties that are of a given type?-CodePudding

Basically what I want is something like below

    [SomeJsonIgnoreAnnotation]
    class MySecret {
      public int Secret { get; set; } = 1;
    }

    class A {
      public MySecret SecretA { get; set; } = new();
    }

    class B {
      public MySecret SecretB { get; set; } = new();
    }

And System.Text.Json.JsonSerializer would treat class A and class B as if SecretA and SecretB are annotated with [JsonIgnore]

CodePudding user response：

The simple solution:

class MySecret {
    [JsonIgnore]
    public int Secret { get; set; } = 1;
}

Now the property Secret will never be serialized by any class using the class MySecret.

CodePudding user response：

if you have many properties it is more effective to use DataContract attribute instead of JsonIgnore

   [DataContract]
    public class MySecret
    {
        public int Secret { get; set; } = 1;

    }

test

    var a = new A();
    JsonConvert.SerializeObject(a); // {"SecretA":{}}

if you still want to serialize some members you can add DataMember attribute

[System.Runtime.Serialization.DataContract]
public class MySecret
{
    public int Secret { get; set; } = 1;

    [DataMember]
    public int SecretShow { get; set; } = 2;
}

test

{"SecretA":{"SecretShow":2}}