c# - 在 mvc 中动态添加 Bootstrap 行和列

Question

我的 foreach 循环有问题:

@for(int i = 0; i < Model.Count(); i += 3)
{
    <div class="row">
        @foreach (var item in Model) 
        {
            <div class="col-md-4 portfolio-item">
                <a href="@Html.DisplayFor(modelItem => item.UrlSlug)">
                    <img class="img-responsive" src="http://placehold.it/700x400" alt="">
                </a>
                <h3>
                <a href="@Html.DisplayFor(modelItem => item.UrlSlug)">@Html.DisplayFor(modelItem => item.Title)</a>
                </h3>
                <p>@Html.DisplayFor(modelItem => item.ShortDescription)</p>
                @Html.ActionLink("Edit", "Edit", new { id = item.Id }) |
                @Html.ActionLink("Details", "Details", new { id = item.Id }) |
                @Html.ActionLink("Delete", "Delete", new { id = item.Id })
            </div>
        }
    </div>
}

此方法显示一个大长列表，但我只想显示三个 (3x) <div class="col-md-4 portfolio-item">里面<div class="row">在填充了三个投资组合项目之后，我想创建另一个 <div class="row">并填充下一个三个<div class="col-md-4 portfolio-item"> .

我怎样才能做到这一点？

Answer 1

你可以使用像for (int i = 0; i < Model.Count; i += 3) 这样的外部for 循环比<div class="row">而您的实际 foreach 使用 Model.Skip(i).Take(3) .

@for(int i = 0; i < Model.Count(); i += 3)
{
    <div class="row">
        @foreach (var item in Model.Skip(i).Take(3)) 
        {
            <div class="col-md-4 portfolio-item">
                <a href="@Html.DisplayFor(modelItem => item.UrlSlug)">
                    <img class="img-responsive" src="http://placehold.it/700x400" alt="">
                </a>
                <h3>
                <a href="@Html.DisplayFor(modelItem => item.UrlSlug)">@Html.DisplayFor(modelItem => item.Title)</a>
                </h3>
                <p>@Html.DisplayFor(modelItem => item.ShortDescription)</p>
                @Html.ActionLink("Edit", "Edit", new { id = item.Id }) |
                @Html.ActionLink("Details", "Details", new { id = item.Id }) |
                @Html.ActionLink("Delete", "Delete", new { id = item.Id })
            </div>
        }
    </div>
}