如何在CRUD功能中映射复合键 [英] how to map composite key in CRUD functionality

问题描述

我需要基于两个键(comp和part)进行映射.

I need to map based on two keys(comp and part).

@foreach (var item in Model) {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.comp)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.part)
            </td>
             ...........................
            <td>
                @Html.ActionLink("Edit", "Edit", new { id=item.comp  }) |   
                @Html.ActionLink("Details", "Details", new { id = item.comp  }) |
                @Html.ActionLink("Delete", "Delete", new { id = item.comp  })
            </td>
        </tr>
    }

如何在索引页面和控制器中使用组合键.

how to use composite key in Index page and also in controller.

public ActionResult Edit(int? id)
    {
         DataView record = db.RecordDataView.Find(id);
            if (record == null)
            {
                return HttpNotFound();
            }
            return View(record);
        }

如果有人有想法请回复.

If anyone have idea please reply.

推荐答案

find方法通过主键查找实体.如果您有复合主键，请按照在模型中定义的顺序传递键值:

The find method, finds entities by the primary key. If you have a composite primary key, then pass the key values in the order they are defined in model:

@Html.ActionLink("Edit", "Edit", new { comp = item.comp, part = item.part }) |   
@Html.ActionLink("Details", "Details", new { comp = item.comp, part = item.part }) |
@Html.ActionLink("Delete", "Delete", new { comp = item.comp, part = item.part })

在控制器中，接收两个值:

In the controller, receive both values:

public ActionResult Edit(int? comp, int? part)
{
    DataView record = db.RecordDataView.Find(comp, part);
    if (record == null)
    {
        return HttpNotFound();
    }
    return View(record);
}

这篇关于如何在CRUD功能中映射复合键的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！