Question

我有一个JSON文件，我使用foreach循环来遍历该文件。一切都很好。目前，所有内容都印在下面的代码中。

@{
    bool anyRoomsForChildrenUnder4 = false;
        foreach (var room in Model.Order.OrderLines)
        {
            anyRoomsForChildrenUnder4 = room.NumberChildren0to3 > 0;
            if (anyRoomsForChildrenUnder4) { break; }
        }
}
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 </head>
 <body>
   @{bool prcb = !string.IsNullOrWhiteSpace((string)Model.Order.Store.JsonDynamic.Da.HotelData.PaymentRequiredForChildrenBreakfast); }
    <tr>
        <th class="small-12 large-6 columns first">
            <table>
                <tr>
                    <th width="300">
                        <p class="text-left small-text-left">
                            @if (prcb)
                            {
                                <strong>Lunch for children under 3</strong>
                            }
                        </p>
                    </th>
                </tr>
            </table>
        </th>
        <th class="small-12 large-6 columns last">
            <table>
                <tr>
                    <th width="300">
                        <p class="text-left small-text-left">
                            @if (prcb)
                            {
                                <span>@Model.Order.Store.JsonDynamic.Da.HotelData.PaymentRequiredForChildrenBreakfast</span>
                            }
                        </p>
                    </th>
                    <th class="expander"></th>
                </tr>
            </table>
        </th>
    </tr>

    <!-- Price for children breakfast-->
    @{bool pfcf = !string.IsNullOrWhiteSpace((string)Model.Order.Store.JsonDynamic.Da.HotelData.PriceForChildrenBreakfast); }
    <tr>
        <th class="small-12 large-6 columns first">
            <table>
                <tr>
                    <th width="300">
                        <p class="text-left small-text-left">
                            @if (pfcf)
                            {
                                <strong>OA dummy text for now</strong>
                            }
                        </p>
                    </th>
                </tr>
            </table>
        </th>
        <th class="small-12 large-6 columns last">
            <table>
                <tr>
                    <th width="300">
                        <p class="text-left small-text-left">
                            @if (pfcf)
                            {
                                <span>@Model.Order.Store.JsonDynamic.Da.HotelData.PriceForChildrenBreakfast</span>
                            }
                        </p>
                    </th>
                    <th class="expander"></th>
                </tr>
            </table>
        </th>
    </tr>
</body>
</html>

但如果(anyRoomsForChildrenUnder4) true ，则只需打印以下代码。如果不是，则不应执行以下代码。

（anyRoomsForChildrenUnder4）＆gt; 0：true - ＆gt;打印

（anyRoomsForChildrenUnder4）= 0：false - ＆gt;不要打印

有人知道我该怎么做吗？

Answer 1

方法1

只需将标记存储在ViewBag中，如下所示：

@{
    bool anyRoomsForChildrenUnder4 = false;
    foreach (var room in Model.Order.OrderLines)
    {
        anyRoomsForChildrenUnder4 = room.NumberChildren0to3 > 0;
        if (anyRoomsForChildrenUnder4) { ViewBag.AnyRoomsForChildrenUnder4 = true; }
    }
 }

然后你可以在任何你想要的地方访问它：

@if(ViewBag.AnyRoomsForChildrenUnder4)
{
    // ... print whatever you want
}

方法2

但是在你的视图中拥有所有C＃代码并不是一个好主意。在控制器中执行所有操作并将模型传递给视图。这个模型将包含您的视图所需的一切，并且可以很简单。更好的方法是将模型从控制器传递到视图。有这样的模型：

public class SomeModel // Give this a better name
{
    public bool AnyRoomsForChildrenUnder4 { get; set; }

    // Put other properties which your view needs
}

然后在你的控制器中执行此操作（请记住我在这里做了很多假设，所以请以此为例）：

var model = new SomeModel();
bool anyRoomsForChildrenUnder4 = false;
foreach (var room in Model.Order.OrderLines)
{
    anyRoomsForChildrenUnder4 = room.NumberChildren0to3 > 0;
    if (anyRoomsForChildrenUnder4) { 
        model.AnyRoomsForChildrenUnder4 = true;
        break;
    } 
}
return View(model);

然后在你看来：

@model SomeModel
// ... code
@if (Model.AnyRoomsForChildrenUnder4)
{
    // Your code here
}

如果为true，则显示JSON对象

1 个答案: