asp-action 不调用控制器

Question

我已经从ASP.NET core samples 复制了语言选择器，并将 SetLanguage 方法添加到我的

    [HttpPost]
    public IActionResult SetLanguage(string culture, string returnUrl)
    {
        Response.Cookies.Append(
            CookieRequestCultureProvider.DefaultCookieName,
            CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(culture)),
            new CookieOptions { Expires = DateTimeOffset.UtcNow.AddYears(1) }
        );

        return LocalRedirect(returnUrl);
    }

但是，当我更改语言选择时，控制器从未被调用，并且没有网络请求或 JavaScript 错误。关于缺少什么的任何建议。

@using Microsoft.AspNetCore.Builder
@using Microsoft.AspNetCore.Http.Features
@using Microsoft.AspNetCore.Localization
@using Microsoft.AspNetCore.Mvc.Localization
@using Microsoft.Extensions.Options

@inject IViewLocalizer Localizer
@inject IOptions<RequestLocalizationOptions> LocOptions

@{
    var requestCulture = Context.Features.Get<IRequestCultureFeature>();
    var cultureItems = LocOptions.Value.SupportedUICultures
        .Select(c => new SelectListItem { Value = c.Name, Text = c.DisplayName })
        .ToList();
}

<div title="@Localizer["Request culture provider:"] @requestCulture?.Provider?.GetType().Name">
    <form id="selectLanguage" asp-controller="Home" asp-action="SetLanguage" asp-route-returnUrl="@Context.Request.Path" method="post" class="form-horizontal" role="form">
    @Localizer["Language:"] <select name="culture" asp-for="@requestCulture.RequestCulture.UICulture.Name" asp-items="cultureItems">        </select>
    </form>
</div>

渲染出来的HTML如下：

<div title="Request culture provider: AcceptLanguageHeaderRequestCultureProvider">
<form id="selectLanguage" method="post" class="form-horizontal" role="form" action="/Home/SetLanguage?returnUrl=%2F">
    Language: <select name="culture" id="requestCulture_RequestCulture_UICulture_Name"><option selected="selected" value="en-GB">English (United Kingdom)</option>
<option value="en-US">English (United States)</option>
<option value="en">English</option>
<option value="de">Deutsch</option>
<option value="fr">français</option>
</select>
    <input name="__RequestVerificationToken" type="hidden" value="CfDJ8GV_4Y4TrKRMt52xrAg49HFabVGQ6RTHVo2cPjiA2tk3yAtt7EFi-dr3P6wRdR6vj0FqDcXgKwvYef8HrVWa9tFupW9eTJMOBQ848jT_zG2t2-0_XNuAFmnOYfAu3DNBuS6DpF8RF8TfmRdTktOQYzk"></form>
</div>

Answer 1

您是否添加了 javascript 以使选择自动发布？

(function () {
$("#selectLanguage select").change(function () {
    $(this).parent().submit();
    });
}());