Question

I have 2 entities Orders and Items with OrdersController and ItemsController. In my Orders Index View I have a webgrid

grid.Column(columnName: "OrderNo", header: "Order No.", canSort: true),
grid.Column(columnName: "OrderDate", header: "Order Date", canSort: true),                                                                                        
grid.Column(" ", " ", format: @<a href="@Url.Action("Index", "Items", new { id = item.OrderNo })">Items</a>)

议程项目主计长我在指数中增加了一个参数:

public ActionResult Index(string id = "0")
    {
        var orderq = from a in db.items
                        where a.OrderNo== id
                        select a;
        return View(orderq.ToList()); // ex : orderq.Count = 2
    }...
    protected override void Dispose(bool disposing)
    {
        db.Dispose();
        base.Dispose(disposing);
    } // Object reference not set to an instance of an object

但我收到。反对不针对物体的例子。

Q : 我不得不从我的命令中打开这些物品?

我是否必须澄清我的情况并再次宣布它?

Answer 1

Order.cshtml

grid.Column(" ", " ", format: @<a href="@Url.Action("Index", "Items", new { id = item.OrderNo})">Items</a>)));

ItemsController.cs

public ActionResult Index(string id = "0")
    {
        var itemsqry = db.items.Where(a=>a.OrderNo == id);
        return View(itemsqry .ToList());
    }

友情链接