Get data from Ajax in ASP.NET Core not working? - asp.net-core

Question

I'm new at ASP.NET Core, and this is how I get data from Ajax.
I have a View Model like this
public class RequestSearchDefaultModel
{
public string FromToDate { get; set; }
public int Status { get; set; }
public List<SelectListItem> StatusType { get; set; }
public DateTime FromDate { get; set; }
public DateTime ToDate { get; set; }
public IEnumerable<RequestViewModel> requestViewModel { get; set; }
}
When I search the form, I use Ajax to get the data
function OpenSearch() {
var stt = $('#StatusDropDown').val();
var daterange = $('#daterange').val();
var url = "#Url.Action("Search","RequestApproval")";
var model = { FromToDate: daterange, Status: stt };
$.ajax({
type: "POST",
data: JSON.stringify(model),
url: url,
contentType: "application/json",
}).done(function (res) {
console.log("here");
$('#myTable').html(res);
})
}
This is controller
[HttpPost]
public async Task<IActionResult> Search([FromBody] RequestSearchDefaultModel m)
{
m.FromDate = DateTime.Parse(m.FromToDate.Substring(0, 10)).Add(new TimeSpan(00, 0, 0));
m.ToDate = DateTime.Parse(m.FromToDate.Substring(14)).Add(new TimeSpan(23, 59, 59));
var request = _headerService.Search();
m.requestViewModel = _mapper.Map<IEnumerable<RequestViewModel>>(request);
return PartialView("_RequestBody", m);
}
This is the view
<div class="card-body">
<div class="table-responsive" id="myTable">
#Html.Partial("_RequestBody")
</div>
</div>
And this is the partial view
#model RequestSearchDefaultModel
<table class="table table-striped">
<thead>
<tr>
<th>Seq.</th>
<th>Title</th>
<th>Status</th>
<th>Draft Date</th>
<th>Final Approval Date</th>
</tr>
</thead>
<tbody id="RequestBody">
#if (Model.requestViewModel == null)
{
}
else
{
foreach (var item in Model.requestViewModel)
{
<tr>
<td>#item.ID</td>
<td>#item.DocumentNo</td>
<td>
<a asp-action="Edit" asp-route-id="#item.ID">#item.Title</a>
</td>
<td>#item.DraftDate</td>
</tr>
}
}
</tbody>
</table>
But I can't get the data, I don't know where I wrong, so please help. Thanks in advance.