The next generation of the Teknik Services. Written in ASP.NET.
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using Microsoft.AspNetCore.Mvc.ModelBinding;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
namespace Teknik.Utilities
public class FormDataJsonBinder : IModelBinder
public Task BindModelAsync(ModelBindingContext bindingContext)
if (bindingContext == null) throw new ArgumentNullException(nameof(bindingContext));
// Fetch the value of the argument by name and set it to the model state
string fieldName = bindingContext.FieldName;
var valueProviderResult = bindingContext.ValueProvider.GetValue(fieldName);
if (valueProviderResult == ValueProviderResult.None) return Task.CompletedTask;
else bindingContext.ModelState.SetModelValue(fieldName, valueProviderResult);
// Do nothing if the value is null or empty
string value = valueProviderResult.FirstValue;
if (string.IsNullOrEmpty(value)) return Task.CompletedTask;
// Deserialize the provided value and set the binding result
object result = JsonConvert.DeserializeObject(value, bindingContext.ModelType);
bindingContext.Result = ModelBindingResult.Success(result);
catch (JsonException)
bindingContext.Result = ModelBindingResult.Failed();
return Task.CompletedTask;