Question

我有一个页面用于在我的Database.One字段中的某个表中插入新行。该字段是同一个表中父项的外键。所以我想要一个drobdownlist供用户选择父级。这是我的表定义：

Id          Integer
ParentId_Fk Integer
Body        Varchar
Title       Varchar

创建页面视图：

@model MVCDrLaptop.Models.Education

@{
    Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <title>Create</title>
</head>
<body>
    <script src="@Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

    @using (Html.BeginForm()) {
        @Html.ValidationSummary(true)
        <fieldset>
            <legend>Education</legend>

            <div class="editor-label">
                @Html.LabelFor(model => model.Title)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Title)
                @Html.ValidationMessageFor(model => model.Title)
            </div>

            <div class="editor-label">
                @Html.LabelFor(model => model.Text)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Text)
                @Html.ValidationMessageFor(model => model.Text)
            </div>

            <div class="editor-field">
                //here is for parentId_FK DropDownList
            </div>

            <p>
                <input type="submit" value="Create" />
            </p>
        </fieldset>
    }

    <div>
        @Html.ActionLink("Back to List", "Index")
    </div>
</body>
</html>

那么我应该写什么来创建我的DropDownList？

Answer 1

@Html.DropDownListFor然后从模型中应用您需要的字段。

以下是使用DropDownList和DropDownListFor http://blinkingcaret.wordpress.com/2012/08/11/using-html-dropdownlistfor/

的示例

Answer 2

首先从数据库中获取所有值。

控制器：

    IEnumerable<SelectListItem> items = from value in values
                                        select new SelectListItem
                                        {
                                          Text = value.ToString(),
                                          Value = value.ToString(),
                                          Selected = value == selectedMovie,
                                         };
    ViewBag.MovieType = items;

查看：

    @Html.DropDownList("items")

在Razor Engine MVC中创建DropDownList

2 个答案: