How to send complex data to controller endpoint - asp.net-core

Question

I have this basic case:
[HttpPost("endpoint")]
public IActionResult Endpoint(DateTime date, string value, bool modifier)
{
return Ok($"{date}-{value}-{modifier}");
}
and I'm able to send a request to it with
var testContent = new FormUrlEncodedContent(new Dictionary<string, string>
{
{ "date", DateTime.Today.ToShortDateString() },
{ "value", "value1" },
{ "modifier", true.ToString() }
});
Instead I want my endpoint to be this instead
[HttpPost("endpointwithlist")]
public IActionResult EndpointWithList(DateTime date, List<string> value, bool modifier)
{
return Ok($"{date}-{value.FirstOrDefault()}-{modifier}");
}
How do I send this? I have tried the below, nothing works
var json = JsonConvert.SerializeObject(new { date, value = valueCollection.ToArray(), modifier });
var testContentWithList = new ByteArrayContent(Encoding.UTF8.GetBytes(json));
testContentWithList.Headers.ContentType = new MediaTypeHeaderValue("application/json");

Answer 1

You might create a model class for the payload
public class EndpointWithListModel
{
public DateTime Date {get; set;}
public List<string> Value {get; set;}
public bool Modifier {get; set;}
}
the method parameter then could use [FromBody] attribute
public IActionResult EndpointWithList([FromBody]EndpointWithListModel model)
then send the json to your POST method, example is here. Using HttpClient:
using (var client = new HttpClient())
{
var response = await client.PostAsync(
"http://yourUrl",
new StringContent(json, Encoding.UTF8, "application/json"));
}

Answer 2

if your variables(date, valueController and modifier) are in the right type, following code should work.
var json = JsonConvert.SerializeObject(new { date:date, value : valueCollection.ToArray(), modifier:modifier });