how to set the jsonproperty for property names to the dto while using automapper?

Question

In my API I'm using automapper for mapping to model, and it is finely mapping the entity to model, but I want to add PropertyNames to the model. I used Json.net's JsonProperty but this is not working as excepted.

the below is the DTO class

public class StudentModel
{
[JsonProperty("Admission Number")] public string StudentId { get; set; }
[JsonProperty("Date of Birth")] public string DOB { get; set; }
[JsonProperty("Name")] public string StudentName { get; set; }
}

the below is the entity class

public class StudentEntity
{
public string StudentId { get; set; }
public DateTime DOB { get; set; }
public string StudentName { get; set; }
}

the mapping like this mappingProfile.CreateMap<StudentEntity, StudentModel>() and the mapper is: _mapper.Map<StudentEntity, StudentModel>(entity)).ToList();

but I'm not getting the JSON property in the response

the output like this

{
"studentId": "30112020",
"dOB": "01-01-2020 12:00 AM",
"studentName": "rom"
}

but I want to get like this

{
"Admission Number": "30112020",
"Date of Birth": "01-01-2020 12:00 AM",
"Name": "rom"
}

Are you sure you are using [tag:json.net]? ASP.NET Core 3.0 and later use a different serializer, [tag:system.text.json]. See [Migrate from ASP.NET Core 2.2 to 3.0: Newtonsoft.Json (Json.NET) support](https://learn.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-5.0&tabs=visual-studio#newtonsoftjson-jsonnet-support) and [Where did IMvcBuilder AddJsonOptions go in .Net Core 3.0?](https://stackoverflow.com/a/55666898/3744182). — dbc, Dec 05 '20 at 13:53
[tag:system.text.json] uses a different attribute to control the serialized property name, [`JsonPropertyNameAttribute`](https://learn.microsoft.com/en-us/dotnet/api/system.text.json.serialization.jsonpropertynameattribute). See [Converting newtonsoft code to System.Text.Json in .net core 3. what's equivalent of JObject.Parse and JsonProperty](https://stackoverflow.com/a/58273914/3744182). — dbc, Dec 05 '20 at 13:56
If you are sure you are using Json.NET a [mcve] specifying your asp.net-core version and how you generated the output JSON would increase the chance we can help you. — dbc, Dec 05 '20 at 13:57
@dbc Thanks for the response it worked, when gave the JsonPropertName instead of JsonProperty — 11738472, Dec 06 '20 at 12:35

11738472 · Accepted Answer · 2021-10-24T20:28:38.387

it worked, after following dbc's comment

public class ResponseJson
{
    [JsonPropertyName("StudentId")]
    public string StudentId { get; set; }
    [JsonPropertyName("dob")]
    public string DOB { get; set; }
    [JsonPropertyName("StudentName ")]
    public string StudentName { get; set; }
}

instead of

public class StudentModel
{
[JsonProperty("Admission Number")] public string StudentId { get; set; }
[JsonProperty("Date of Birth")] public string DOB { get; set; }
[JsonProperty("Name")] public string StudentName { get; set; }
}

how to set the jsonproperty for property names to the dto while using automapper?

1 Answers1