c# - 在 for 循环 Razor View 中分组

Question

我的 Razor View 中有以下内容

                @foreach (var group in Model.QuestionList.GroupBy(x => x.AreaName))
            {
                <h4>@group.Key</h4>

                for (int i = 0; i < Model.QuestionList.Count(x => x.AreaName == group.Key); i++)
                {

                <div class="form-group">
                    <div class="row">
                        <div class="col-md-4">
                            @Html.DisplayFor(x => Model.QuestionList[i].Question)
                        </div>
                        <div class="col-md-2">
                            @Html.HiddenFor(x => Model.QuestionList[i].StnAssureQuestionId)
                            @Html.DropDownListFor(model => model.QuestionList[i].Score, new SelectList(Model.QuestionList[i].Scores, "ScoreId", "ScoreNum", 0), "Please Select", new { @class = "form-control" })
                            @Html.ValidationMessageFor(model => model.QuestionList[i].Score, "", new { @class = "text-danger" })
                        </div>
                        <div class="col-md-4">
                            @Html.EditorFor(x => Model.QuestionList[i].Comments, new { htmlAttributes = new { @class = "form-control" } })
                            @Html.ValidationMessageFor(model => model.QuestionList[i].Comments, "", new { @class = "text-danger" })
                        </div>
                    </div>
                </div>
                }
            }

我希望能够显示 QuestionList 中的所有对象，但按 AreaName(组键)对它们进行分组。

当前代码显示第一组的标题，然后显示该组中的问题，但之后它所做的只是显示下一组名称，后跟相同的问题，然后再次显示所有组。

我敢肯定这很简单，但我仍然不够熟练，无法发现它。

Answer 1

您可能可以通过这样的方式解决问题，但我也会采纳其他人关于为此 View 创建特定 View 模型的建议。

@foreach (var group in Model.QuestionList.GroupBy(x => x.AreaName))
{
    var questionList = group.ToList();
    <h4>@group.Key</h4>
    for (int i = 0; i < questionList.Count(); i++)
    {
        <div class="form-group">
            <div class="row">
                <div class="col-md-4">
                    @Html.DisplayFor(x => questionList[i].Question)
                </div>
                <div class="col-md-2">
                    @Html.HiddenFor(x => questionList[i].StnAssureQuestionId)
                    @Html.DropDownListFor(model => questionList[i].Score, new SelectList(questionList[i].Scores, "ScoreId", "ScoreNum", questionList[i].Score), "Please Select", new { @class = "form-control" })
                    @Html.ValidationMessageFor(model => questionList[i].Score, "", new { @class = "text-danger" })
                </div>
                <div class="col-md-4">
                    @Html.EditorFor(x => questionList[i].Comments, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => questionList[i].Comments, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>
    }
}            

Dot Net Fiddle Example