ASP.NET MVC开始不调用控制器

Question

我正在尝试将表单中的字符串发送到Controller，但单击“提交”按钮并不会向ActionResult发送任何内容。

相反，它返回错误404.我已经尝试过HttpPost和HttpGet，但两者都没有工作。

这是控制器：

    public ActionResult ExistingClient()
    {
        ViewBag.Existing = true;

        return View("LandingPage");
    }

    public ActionResult SearchClient(string q)
    {
        var client = from p in identityDb.MyUserInfo select p;

        if (!string.IsNullOrEmpty(q))
        {
            client = client.Where(x => x.NIP_Regon.ToString() == q);
        }

        ViewBag.FoundClient = true;
        ViewBag.Name = client.ToList().First().FirstName;

        return View("LandingPage");
    }

我的意见：

@{
    ViewBag.Title = "LandingPage";
}

<h2>Wystaw fakturę VAT dla</h2>

<br /><br />

<div class="container-fluid">
    <div class="form-group .col-md-12">
        <div class="col-md-4">
            @Ajax.ActionLink("Istniejący klient", "ExistingClient", "Vat", new AjaxOptions(), new { @class = "btn btn-default btn-lg" })
        </div>
        <div class="col-md-4">
            <input type="submit" value="Nowy klient" class="btn btn-default btn-lg" />
        </div>
    </div>

    @if(ViewBag.Existing == true)
    {
        <div>
            @Html.Partial("_GetClientPartial")
        </div>
    }
</div>

部分：

@model Stacja_paliw.Models.UserInfo
@{
    ViewBag.Title = "_GetClientPartial";
}

@using (Html.BeginForm("SearchClient", "Vat", "FormMethod.Get"))
{
    @Html.AntiForgeryToken()

    <div class="container-fluid">

        <h4>Podaj NIP klienta</h4>

        <div class=".col-md-12">
            @Html.TextBox("q", null, new { @class = "form-control", @id = "client-search", @placeholder = "Client NIP" })
        </div>
        <div>
            <input type="submit" value="Wyślij" class="btn btn-default btn-lg" />
        </div>

        @if(ViewBag.FoundClient == true)
        {
            @Html.Raw(ViewBag.Name);           
        }

    </div>
}

默认路由配置：

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}