Modify DataContractJsonSerializer Behavior

Question

Is there a way to tell the DataContractJsonSerializer not to display members/properties whose value is null?

For example: {"x": 1, "y": null, "z": 3} => {"x": 1, "z": 3}

Answer 1

It seems to work in this case:

[DataContract]
class Example
{
    [DataMember( EmitDefaultValue = false )]
    public int? x { get; set; }

    [DataMember( EmitDefaultValue = false )]
    public int? y { get; set; }

    [DataMember( EmitDefaultValue = false )]
    public int? z { get; set; }
}

If this does not work, then show your details.

Answer 2

Is it possible to use other packages,？Such as System.Text.Json, which provides specific methods to ignore empty values.

    class Program  
    {  
        static void Main(string[] args)  
        {  
            MyClass myClass = new MyClass() { ID = 1, Age = 25 };  
  
            var jsonSerializerOptions = new JsonSerializerOptions()  
            {  
                IgnoreNullValues = true  
            };  
            string jsonString =  JsonSerializer.Serialize(myClass, jsonSerializerOptions);  
            Console.WriteLine();  
        }  
    }  
    class MyClass  
    {  
        public int ID { get; set; }  
        public string Name { get; set; }  
        public int Age { get; set; }  
    }  

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