Csharp try 在.Net核心身份注册页面中使用AJAX，但没有成功..NET Core 5.0 Razor页面应用程序

try 使用AJAX调用对.Net核心身份注册页面上输入的值进行一些验证.

这是我的代码

注册器.cshtml

按钮代码-

<button type="button" class="btn btn-primary" id="Submit" >Create Account</button>

呼叫码-

 $("#Submit").on('click', function (event) {

     debugger;
     var urlVal = $(location).attr('href') + "?handler=CheckvcNumber"
     debugger;

     $.ajax({
         Type:"POST",
         url: urlVal,
         beforeSend: function (xhr) {
             xhr.setRequestHeader("RequestVerificationToken",
                 $('input:hidden[name="__RequestVerificationToken"]').val());
         },
         data: {
             "vcNumber": $("#VCNumberInput").val()
         },
         async: false,
         success: function (response) {
             debugger;
             $('#RegisterForm').submit();
         },
         failure: function (response) {
             debugger;
             alert(JSON.stringify(response));
         },
         error: function (response) {
             debugger;
             alert(JSON.stringify(response));
         }
     });
 });

Urlval=‘http://localhost:53196/Identity/Account/Register?handler=CheckvcNumber’

In 注册器.cshtml.cs

[Authorize(Roles = "Admin")]
public class RegisterModel : PageModel

.. .. ..

public async Task<JsonResult> OnPostCheckvcNumberAsync(string vcNumber)
{
    if (string.IsNullOrEmpty(vcNumber)) throw new ArgumentException(nameof(vcNumber));  
    return new JsonResult(new { message = "Unauthorized" });
}

When I run the code it goes straight to the successfunction in the Ajax call. Doesn't go to the OnPostCheckvcNumberAsyncmethod in 注册器.cshtml.cs

希望有人能帮忙！

谢谢