public async Task BindModelAsync(ModelBindingContext bindingContext) { var httpContext = bindingContext .HttpContext; var request = httpContext .Request; IConfiguration configuration = (IConfiguration)httpContext .RequestServices .GetService ( typeof(IConfiguration) ); var jwtTokenName = configuration .GetSection("TokenName") .Value; var ok = false; ok = request .TryParseJTokenParameters ( out JToken parameters , out var secretJwtToken , async() => { return (await bindingContext .GetFormJTokenAsync()); } , jwtTokenName ); if (ok) { if ( !httpContext .Items .ContainsKey ( _itemKeyOfRequestJTokenParameters ) ) { httpContext .Items .Add ( _itemKeyOfRequestJTokenParameters , parameters ); } } if (!StringValues.IsNullOrEmpty(secretJwtToken)) { httpContext .Items .Add ( jwtTokenName , secretJwtToken ); } bindingContext .Result = ModelBindingResult .Success ( parameters ); }