Question

我正在尝试使用数组来遍历模型字段 @Html.DisplayNameFor(model => model.[fld])其中fld在数组中 flds见下面的代码。请让我知道如何做到这一点。

@model IEnumerable<SchoolAutomationSite.Models.tblClass>

    @{
        ViewBag.Title = "List Of Classes";
    }

    <h2>@ViewBag.Title</h2>

    <p>
        @Html.ActionLink("Create New Class", "Create")
    </p>

    <table class="table">
        <tr>

这是数组

    @{
        string[] DisplayName = { "name", "description", "createdAt", "updatedAt" };
    }


    @foreach (var fld in flds)
    {

            <th>
                @Html.DisplayNameFor(model => model.[fld])

如何做上述内容？

            </th>
    }
        </tr>

    @foreach (var item in Model) {
        <tr>

            @foreach (var fld in flds)
            {

                <td>
                    @Html.DisplayFor(modelItem => item.[flds])
                </td>
            }


            use the above instead off
            ----------
            <td>
                @Html.DisplayFor(modelItem => item.name)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.description)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.createdAt)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.updatedAt)
            </td>

            ----------
        </tr>
    }

    </table>

Answer 1

您可以将dotNet对象转换为字典，然后遍历密钥集合。这是我过去使用过的扩展方法：

    public static class ObjectExtensions
{
    /// <summary>
    /// Turns object into dictionary
    /// </summary>
    /// <param name="o"></param>
    /// <returns></returns>
    public static IDictionary<string, TVal> ToDictionary<TVal>(this object o)
    {
        if (o != null)
        {
            var props = TypeDescriptor.GetProperties(o);
            var d = new Dictionary<string, TVal>();
            foreach (var prop in props.Cast<PropertyDescriptor>())
            {
                var val = prop.GetValue(o);
                if (val != null)
                {
                    d.Add(prop.Name, (TVal)val);
                }
            }
            return d;
        }
        return new Dictionary<string, TVal>();
    }

}

然后像这样称呼它：

var fields = Model.ToDictionary();
foreach (var key in fields.Keys) {
    <td>
        @fields[key]
    </td>
}

或者，使用你的flds数组：

var fields = Model.ToDictionary();
foreach (var fld in flds) {
    <td>
        @fields[fld]
    </td>
}

ASP.NET MVC C＃ - 使用数组值循环遍历模型字段，例如model。[数组值]

1 个答案: