Question

我正在尝试使用create函数将用户选择的值输入数据库。按下创建按钮时，不会抛出任何错误，但不会填充数据。我很确定我的频率字段是导致问题的，但是无法提供解决方案。

根据用户的“通知名称”选择，用户可以选择两种不同类型的频率。一个选择具有3个单独的字段，用于数值，时间范围（周，月等）以及选择之前/之后。另一个简单地将瞬时声明为静态文本字段。无论选择哪个选项，频率数据都应填充到数据库中的一个单元格中，然后在必要时使用管道进行分隔。我仍然是C＃MVC的新手，所以非常感谢任何帮助。

控制器：

[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create([Bind(Include = "Id,notificationType1,recipientTypeId,frequency")] NotificationType notificationType)
    {
        if (ModelState.IsValid)
        {
            db.NotificationType.Add(notificationType);
            db.SaveChanges();
            return RedirectToAction("Create");
        }

        ViewBag.recipientTypeId = new SelectList(db.RecipientType, "Id", "recipientRole", notificationType.recipientTypeId);
        return View(notificationType);
    }

查看

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">

        <hr />

        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">

            @Html.LabelFor(model => model.notificationType1, "Notification Name", htmlAttributes: new { @class = "control-label col-md-2 helper-format" })
            <div class="col-md-10" id="type_selection">
                @Html.DropDownList("notificationType1", new List<SelectListItem> {
            new SelectListItem { Text = "Make a Selection", Value="" },
            new SelectListItem { Text = "Incomplete Documents", Value= "Incomplete Documents" },
            new SelectListItem { Text = "All Documents Complete", Value = "All Documents Complete" },
            new SelectListItem { Text = "Documents Requiring Action", Value = "Documents Requiring Action" }
                   }, new { @class = "helper-format", @id = "value_select", style = "font-family: 'Roboto', Sans Serif;" })
                @Html.ValidationMessageFor(model => model.notificationType1, "", new { @class = "text-danger" })
            </div>

        </div>
        <div class="form-group" id="frequency_group">
            @Html.LabelFor(model => model.frequency, "Frequency", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-sm-3" id="frequency_group">
                @Html.TextBoxFor(model => model.frequency, new { @class = "textbox-width", @placeholder = "42" })

                @Html.DropDownList("frequency", new List<SelectListItem>
       {
           new SelectListItem { Text = "Day(s)", Value= "| Day"},
            new SelectListItem { Text = "Week(s)", Value= "| Week"},
            new SelectListItem { Text = "Month(s)", Value= "| Month"}
       })

                @Html.DropDownList("frequency", new List<SelectListItem>
       {
           new SelectListItem { Text = "Before", Value= "| Before"},
            new SelectListItem { Text = "After", Value= "| After"}
       })
            </div>
            <p class="col-sm-2" id="psdatetext">The Beginning</p>
        </div>
        <div class="form-group" id="freq_instant">
            @Html.LabelFor(model => model.frequency, "Frequency", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="instant_text">  
            <p>Instantaneous</p></div>

        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.recipientTypeId, "Notification For", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownList("recipientTypeId", new List<SelectListItem>
       {
           new SelectListItem { Text = "Me", Value= "Me"},
           new SelectListItem { Text = "Account Manager", Value="Account Manager" },
           new SelectListItem { Text = "Candidate", Value= "Candidate"},
           new SelectListItem { Text = "Recruiter", Value="Recruiter" },
           new SelectListItem { Text = "Manager", Value= "Manager"}
       })
            </div>
        </div>
        <div class="form-group">
            <div class="col-md-offset-1 col-md-10">
                <div id="hovercreate">
                    <button type="submit" value="CREATE" class="btn btn-primary" id="createbtn">CREATE</button>
                </div>

            </div>

        </div>
    </div>
}

JS用于频率选项

@Scripts.Render("~/bundles/jquery")
<script type="text/javascript">
$(document).ready(function () {
    $('#frequency_group').hide()
    $('#freq_instant').hide()

    $('#value_select').change(function () {
        var selection = $('#value_select').val();
        $('#frequency_group').hide();
        switch (selection) {
            case 'Incomplete Documents':
                $('#frequency_group').show();
                break;
            case 'All Documents Complete':
                $('#frequency_group').show();
                break;
        }
    });

    $('#value_select').on('change', function () {
        if (this.value == 'Documents Requiring Action') {
            $("#freq_instant").show();
        }
        else {
            $("#freq_instant").hide();
        }
    });

});

Answer 1

是否手动分配了Id键？如果不是（例如，如果它是IDENTITY字段），则不应该绑定它 - 从[Bind（Include =＆＃34; ...＆＃34;）]中删除Id。 / p>

Answer 2

您是否在方法上设置了断点？如果是这样，它会触发吗？

如果没有，试试这个......

根据我的记忆，所有控制器都有一个默认参数ID，它在RouteConfig.cs文件中设置（App_Start / RouteConfig.cs）。

有几种方法可以从那里开始。 1.为控制器提供ID参数（例如（int ID）） 2.通过Route属性

设置路径值

要做到这一点，你需要 - A.在RouteConfig.cs / RegisterRoutes方法的顶部添加以下内容。

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

B中。添加

[ValidateAntiForgeryToken]
[Route(@"Create/")]
public ActionResult Create([Bind(Include = ...
{

我还建议在方法的开头设置一个断点，看它是否会触及它。

http://www.tutorialsteacher.com/mvc/routing-in-mvc https://msdn.microsoft.com/en-us/library/system.web.mvc.routecollectionattributeroutingextensions.mapmvcattributeroutes%28v=vs.118%29.aspx

创建不将数据保存到数据库的功能

2 个答案: