Strange property names in Asp Core JSON output-CodePudding

I have a model class with a few properties named with all caps divided by underscores (e.g. APPOINTMENT_CHECKIN_TIME). A controller Get method returns an instance of this class. But the JSON returned to the client has parts of property names converted to lowercase, like appointmenT_CHECKIN_TIME. What can be causing this, and how to avoid this (e.g. make it appointmentCheckinTime or at least the same as original)?

CodePudding user response：

Customize json property name:

[JsonPropertyName("appointmentCheckinTime")]
public DateTime APPOINTMENT_CHECKIN_TIME { get; set; }

Or customize the option to rename all json property names:

var serializeOptions = new JsonSerializerOptions
{
    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
    WriteIndented = true
};
jsonString = JsonSerializer.Serialize(myObject, serializeOptions);

Or define a global renaming policy:

using System.Text.Json;

namespace SystemTextJsonSamples
{
    public class UpperCaseNamingPolicy : JsonNamingPolicy
    {
        public override string ConvertName(string name) =>
            name.ToUpper();
    }
}

var options = new JsonSerializerOptions
{
    PropertyNamingPolicy = new UpperCaseNamingPolicy(),
    WriteIndented = true
};
jsonString = JsonSerializer.Serialize(myObject, options);

Resource: https://docs.microsoft.com/en-us/dotnet/standard/serialization/system-text-json-customize-properties?pivots=dotnet-6-0

CodePudding user response：

Add this configuration in Program.cs(.Net 6)

builder.Services.AddMvc().AddJsonOptions(options => { options.JsonSerializerOptions.PropertyNamingPolicy = null; });