using System;

using System.Text;

using System.Text.Json;

using System.Text.Json.Serialization;

using System.Reflection;

using System.Linq;

public class Program

{

   public static void Main()

   {

      var myArgs = new ArgClass

      {

          PropA = "Value A",

          PropB = 9

      };

      // myArgs is populated via System.Text.Json deserialization

      Console.WriteLine(myArgs.ToArguments());

      var otherArgs = new OtherArgClass

      {

          PropD = "Value d",

          PropE = 99

      };

       Console.WriteLine(otherArgs.ToArguments());

   }

}

​

public interface IArguments{}

​

public class ArgClass : IArguments

{

   [JsonPropertyName("propertyA")]

   public string PropA {get; set;}

   [JsonPropertyName("propertyA")]

   public int PropB {get; set;}

}

​

public class OtherArgClass : IArguments

{

   [JsonPropertyName("propertyD")]

   public string PropD {get; set;}

   [JsonPropertyName("propertyE")]

   public int PropE {get; set;}

}

​

public static class IArgumentsExt

{

   public static string ToArguments(this IArguments ArgObj)

   {

      var argString = new StringBuilder();

       PropertyInfo[] props = ArgObj.GetType().GetProperties()

           .Where(x => x.CustomAttributes.Any(y => y.AttributeType.Name == nameof(JsonPropertyNameAttribute)))

           .ToArray();

​

       foreach (PropertyInfo prop in props)

       {       

           string propertyName = ((JsonPropertyNameAttribute)prop.GetCustomAttribute(typeof(JsonPropertyNameAttribute))).Name;

           string propertyValue = JsonSerializer.Serialize(prop.GetValue(ArgObj));

           argString.Append($"-argument {propertyName}={propertyValue} ");

       }

​

      return argString.ToString().Trim();

    } 

}