CODEWITHSUNDEEP
c#.netjsonjson.net
mantadt
mantadt

Reputation: 101

List of Ordered Json properties in C#

I have a class as shown below and I am using JSON.NET to serialize/deserialize

public class Car
{
  [JsonProperty(Order = 3)]
  public int CarId {get; set;}
  [JsonProperty(Order = 1)]
  public string CarName {get; set;}
  [JsonIgnore]
  public int CarMfgDate {get; set}
  [JsonProperty(Order = 2)]
  public int CarCapacity {get; set;}
}

I need to get a list of all Json-visible properties in the same order as defined by the 'JsonProperty' attribute in the class above. So, I would want the list to be initialized as below for the 'Car' class. 

List<string> columns = GetOrderedJSONProperties();

Console.WriteLine(columns.Count); //Prints "3"
Console.WriteLine(columns[0]); //Prints "CarName"
Console.WriteLine(columns[1]); //Prints "CarCapacity"
Console.WriteLine(columns[2]); //Prints "CarId"

Please help me write the GetOrderedJSONProperties() method. Thanks for all the help!

Upvotes: 0

Views: 130

Answers (1)

Nico
Nico

Reputation: 3542

You can use Linqs OrderBy function for that:

var columns = typeof(Car).GetProperties()
    .Where(p => p.GetCustomAttribute<JsonIgnoreAttribute>() == null)
    .OrderBy(p => p.GetCustomAttribute<JsonPropertyAttribute>()?.Order)
    .Select(p => p.Name).ToList();

Upvotes: 2

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