Question

我有一个星期实体和一个日实体，每个实体都是表和控制器。因为它在我的应用程序中，你必须分别创建星期和天。在周标签中，如果您点击＆＃34;详情＆＃34;在一周内，您可以在表格中查看日期和数据。

我的问题是，如何创建一个按钮，将您带到DayController创建页面，以便我可以从周标签中查看日期。

以下是本周详细信息的HTML，我是新手，我认为这是可以帮助您理解的代码：

@model Utilities.Models.Week

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
    <h4>Week</h4>
    <hr />
    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.WeekID)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.WeekID)
        </dd>
        <dt>
            @Html.DisplayNameFor(model => model.WeekNo)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.WeekNo)
        </dd>


        <dt>
            @Html.DisplayNameFor(model => model.Days)
        </dt>
        <dd>
            <table class="table">
                <tr>
                    <th>
                        WeekID
                    </th>
                    <th>
                        DayNo
                    </th>
                    <th>
                        Day of the Week
                    </th>
                    <th>
                        Data 1
                    </th>
                    <th>
                        More data
                    </th>
                    <th></th>
                </tr>

                @foreach (var item in Model.Days)
                {
                    <tr>
                        <td>
                            @Html.DisplayFor(modelItem => item.Week.WeekID)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.DayNo)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.DayofWeek)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.Data1)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.More Data)
                        </td>

                    </tr>
                }

            </table>
        </dd>

    </dl>
</div>
<p>

/*
| My attempt at going to the create day page below but it doesn't work. Am I referencing it wrong?
| Basically, I want to click "Create Day" and go to the create page for Day.
*/
    @Html.ActionLink("Create Day", "Create", new { id = Model.Days.DayID}) |
    @Html.ActionLink("Edit", "Edit", new { id = Model.WeekID }) |
    @Html.ActionLink("Back to List", "Index")
</p>

我可以包含可能需要帮助解答的任何其他代码。 Days是Week模型中的导航属性。

当我运行上面的代码时，我得到：

CS1061: 'System.Collections.Generic.ICollection<Utilities.Models.Day>' does not contain a definition for 'DayID' and no extension method 'DayID' accepting a first argument of type 'System.Collections.Generic.ICollection<Utilities.Models.Day>' could be found (are you missing a using directive or an assembly reference?) 但是Day确实有DayID。

Answer 1

由于该错误，我认为您的Model.Days是Day个对象的集合，因此可以找到名为DayID的属性。要完成您的魔杖，您需要在该集合中指定所需对象的索引。请尝试以Model.Days[0].DayID为例告诉我这是否有效。

代码：

@model Utilities.Models.Week

@{
    ViewBag.Title = "Details";
}

<h2>Details</h2>

<div>
    <h4>Week</h4>
    <hr />
    <dl class="dl-horizontal">
        <dt>
            @Html.DisplayNameFor(model => model.WeekID)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.WeekID)
        </dd>
        <dt>
            @Html.DisplayNameFor(model => model.WeekNo)
        </dt>

        <dd>
            @Html.DisplayFor(model => model.WeekNo)
        </dd>


        <dt>
            @{
                var count = 0;
                foreach(var day in Model.Days)
                {
                    @Html.DisplayNameFor(model => day.DayofWeek)
                    if(count!= Model.Days - 1)
                    { @(", ") }
                    count++;
                }
        </dt>
        <dd>
            <table class="table">
                <tr>
                    <th>
                        WeekID
                    </th>
                    <th>
                        DayNo
                    </th>
                    <th>
                        Day of the Week
                    </th>
                    <th>
                        Data 1
                    </th>
                    <th>
                        More data
                    </th>
                    <th></th>
                </tr>

                @foreach (var item in Model.Days)
                {
                    <tr>
                        <td>
                            @Html.DisplayFor(modelItem => item.Week.WeekID)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.DayNo)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.DayofWeek)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.Data1)
                        </td>
                        <td>
                            @Html.DisplayFor(modelItem => item.MoreData)
                        </td>
                        <td>
                            @Html.ActionLink("Create Day", "Create", new { id = item.DayID})
                        </td>
                    </tr>
                }

            </table>
        </dd>

    </dl>
</div>
<p>
    @Html.ActionLink("Edit", "Edit", new { id = Model.WeekID }) |
    @Html.ActionLink("Back to List", "Index")
</p>

更新：

如果您想创建新的一天，只需更改代码：

    <p>
        @Html.ActionLink("Create Day", "Create", "Day")
        @Html.ActionLink("Edit", "Edit", new { id = Model.WeekID }) |
        @Html.ActionLink("Back to List", "Index")
    </p>

创建一个按钮以链接到另一个控制器的create方法

1 个答案: