Making a property deserialize but not serialize with json.net

Making a property deserialize but not serialize with json.net

In order to make a property deserialize but not serialize with JSON.NET, you can use the [JsonProperty] attribute with JsonPropertyAttribute.PropertyName and JsonSerializerSettings with NullValueHandling to ignore null values during serialization.

Here is an example:

 public class MyClass { // property to be deserialized but not serialized [JsonProperty(PropertyName = "myProperty", DefaultValueHandling = DefaultValueHandling.Populate)] public int MyProperty { get; set; } = 0; // property to be serialized normally public string MyOtherProperty { get; set; } } // deserialization var jsonString = "{\"myProperty\": 42, \"myOtherProperty\": \"hello\"}"; var myObject = JsonConvert.DeserializeObject<MyClass>(jsonString); // serialization var settings = new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore }; var jsonString = JsonConvert.SerializeObject(myObject, settings);

In this example, the MyClass has two properties: MyProperty and MyOtherProperty. MyProperty is annotated with the [JsonProperty] attribute with JsonPropertyAttribute.PropertyName = "myProperty" and DefaultValueHandling.Populate. This means that it will be deserialized but not serialized. MyOtherProperty is not annotated and will be serialized and deserialized normally.

During serialization, we create a JsonSerializerSettings object and set its NullValueHandling property to NullValueHandling.Ignore so that any properties with a null value are ignored. We then serialize the object using the JsonConvert.SerializeObject method and passing in the object and the settings.

Note that the JsonPropertyAttribute.DefaultValueHandling property is set to DefaultValueHandling.Populate. This is important because it ensures that the default value of MyProperty is set to 0 if it is not present in the JSON string.

Examples

  1. "Json.NET deserialize-only property C# example"

    • Description: Learn how to create a C# class property that is only deserialized using Json.NET, without being serialized.
    public class MyClass { [JsonProperty(PropertyName = "myProperty", DefaultValueHandling = DefaultValueHandling.Ignore)] public string MyProperty { get; set; } }

  2. "Json.NET ignore serialization for specific property C#"

    • Description: Explore a C# code snippet demonstrating how to use Json.NET to ignore the serialization of a specific property.
    public class MyClass { [JsonProperty(PropertyName = "myProperty", DefaultValueHandling = DefaultValueHandling.Ignore)] public string MyProperty { get; set; } }

  3. "Json.NET deserialize-only attribute for C# property"

    • Description: Implement a C# class property that is marked for deserialization only, using Json.NET attributes.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)] public string MyProperty { get; set; } }

  4. "C# Json.NET deserialize but not serialize property"

    • Description: Explore a C# example demonstrating how to use Json.NET to control serialization for a specific property.
    public class MyClass { [JsonProperty(PropertyName = "myProperty", DefaultValueHandling = DefaultValueHandling.Ignore)] public string MyProperty { get; set; } }

  5. "Json.NET ignore serialization specific property C# code"

    • Description: Learn how to ignore the serialization of a specific property in C# using Json.NET attributes.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)] public string MyProperty { get; set; } }

  6. "C# Json.NET deserialize-only property example"

    • Description: Implement a C# class property that is exclusively deserialized, and not serialized, using Json.NET attributes.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.Never)] public string MyProperty { get; set; } }

  7. "Json.NET exclude property from serialization in C#"

    • Description: Explore C# code demonstrating how to exclude a specific property from serialization using Json.NET.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)] public string MyProperty { get; set; } }

  8. "C# Json.NET ignore serialization but allow deserialization"

    • Description: Learn how to use Json.NET in C# to ignore the serialization of a property while allowing deserialization.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)] public string MyProperty { get; set; } }

  9. "Json.NET C# property deserialize-only attribute"

    • Description: Implement a C# class property with a deserialize-only attribute using Json.NET.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.Never)] public string MyProperty { get; set; } }

  10. "C# Json.NET exclude property from serialization example"

    • Description: Explore a C# code example demonstrating how to exclude a specific property from serialization using Json.NET.
    public class MyClass { [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)] public string MyProperty { get; set; } }

More Tags

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