我有 Master Detail 模型 Stock 和 Article，其中 StockId 作为 Article 中的外键。我在表格中显示 Stock，我想创建一个局部视图以将 Article 添加到表格的每一行。这是我试过的：
股票管理员：
public IActionResult AddArticle(int id)
{
Stock stock = _dbcontext.Stock.Where(e => e.StockId == id).FirstOrDefault();
stock.Articles.Add(new Article() { ArticleId = 1 });
return PartialView("_AddArticlePartialView", stock);
}
public IActionResult AddArticle(Article article)
{
if (article != null)
{
_dbcontext.Article.Add(article);
_dbcontext.SaveChanges();
return RedirectToAction("Index");
}
return View();
}
Index.cshtml:
@model IEnumerable<Stock>
@{
ViewData["Title"] = "Stock";
Layout = "~/Views/Shared/_Theme.cshtml";
}
<table class="table table-bordered table-hover" id="display">
<thead>
<tr>
<th>
@Html.DisplayNameFor(model => model.CategoryId)
</th>
<th>
@Html.DisplayNameFor(model => model.Designation)
</th>
<th>
@Html.DisplayNameFor(model => model.Quantite)
</th>
<th></th>
</tr>
</thead>
<tbody>
@foreach (var item in Model)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Category.CategoryName)
</td>
<td>
@Html.DisplayFor(modelItem => item.Designation)
</td>
<td>
@Html.DisplayFor(modelItem => item.Quantite)
</td>
<td>
<div class="btn-group-sm">
<button class="btn btn-primary" data-toggle="modal" data-target="@("#AddArticle-"+item.StockId)" data-url="@Url.Action($"AddArticle/{item.StockId}")"><i class="fa fa-plus"></i>Ajouter Articles</button>
@await Html.PartialAsync("_AddArticlePartialView", item)
</div>
</td>
</tr>
}
</tbody>
</table>
_AddArticlePartialView.cshtml:
@model StockProject.Models.Stock
@{
ViewData["Title"] = "_AddArticlePartialView";
}
<div class="modal fade" role="dialog" tabindex="-1" id="@("AddArticle-"+Model.StockId)" aria-labelledby="addArticleLabel" aria-hidden="true" >
<div class="modal-dialog modal-xl modal-dialog-scrollable" role="document">
<div class="modal-content">
<div class="modal-header">
<h3 class="modal-title">Articles</h3>
</div>
<div class="modal-body">
<form asp-action="AddArticle" method="post">
<div class="card">
<div class="card-header">
<h3 class="card-title">Articles</h3>
</div>
<div class="card-body">
<table class="table table-bordered" id="articleTable">
<thead>
<tr>
<th>Numero de Serie</th>
<th>Marque</th>
<th>Etat</th>
</tr>
</thead>
<tbody>
@for (int i = 0; i < Model.Quantite; i++)
{
<tr>
<td>
@Html.EditorFor(x => x.Articles[i].NumeroSerie, new { htmlAttributes = new { @class = "form-control" } })
</td>
<td>
@Html.EditorFor(x => x.Articles[i].Marque, new { htmlAttributes = new { @class = "form-control" } })
</td>
<td>
@Html.DropDownListFor(x => x.Articles[i].Etat, new List<SelectListItem> {
new SelectListItem { Value = "En Marche" , Text = "En Marche" },
new SelectListItem { Value = "En Panne" , Text = "En Panne" },
},
new { @class = "form-control" })
</td>
</tr>
}
</tbody>
</table>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Annuler</button>
<button type="submit" class="btn btn-primary">Sauvegarder</button>
</div>
</form>
</div>
</div>
</div>
</div>
当我运行此代码时，我收到此错误消息：
指数超出范围。必须为非负数且小于集合的大小。 （参数“索引”）
错误在这一行
@Html.EditorFor(x => x.Articles[i].NumeroSerie, new { htmlAttributes = new { @class = "form-control" } })
那么我的代码有什么问题？
@Html.EditorFor(x => x.Articles[i].NumeroSerie, new {@class = "form-control"})
在您的局部视图中，您使用
@for (int i = 0; i < Model.Quantite; i++)QuantiteArticlesQuantiteArticlesiArticlesArticles[i]所以这里可以尝试使用
@for (int i = 0; i < Model.Articles; i++)