我觉得这是一个高中男生的错误，但你能向我解释，并提供修复程序为什么这个观点是行不通的：

  @ {
    INT previousOrderId = 0;
}


@foreach（以模型的VaR项）{

＆LT; D​​IV CLASS =的OrderDetail＆GT;


@if（item.ID！= previousOrderId）{

    ＆LT; D​​IV CLASS =客户＆GT;
        ＆其中，P类=强＆GT;订单ID：＆LT; / P＆GT;
        ＆其中p为H.; @ item.ID＆所述; / P＆GT;
        ＆其中，P类=强＆GT;订购日期：＆LT; / P＆GT;
        ＆LT; P＆GT; @的String.Format（{0：绿}，TimeZoneInfo.ConvertTime（item.DateInitialised，TimeZoneInfo.FindSystemTimeZoneById（GMT标准时间）））＆LT; / P＆GT;
        ＆其中，P类=强＆GT;客户名称：＆LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.Name＆所述; / P＆GT;
        ＆其中，P类=强＆GT;实践名称：＆LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.PracticeName＆所述; / P＆GT;
        ＆其中，P类=强＆GT;客户发送电子邮件：LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.EMailAddress＆所述; / P＆GT;
    ＆LT; / DIV＆GT;
   }


    ＆LT; D​​IV CLASS =细节＆GT;
        ＆LT;跨度类=强＆GT;许可证密钥：LT; / SPAN＆GT;＆LT;跨度＆GT;＆LT; D​​IV的风格=宽度：140px;溢出：汽车;＆GT; @ item.Licence.LicenceKey＆LT; / DIV＆GT;＆LT ; / SPAN＆GT;
        ＆LT;跨度类=强＆GT;序列号：＆LT;跨度＆GT;＆LT;跨度＆GT; @ item.Licence.SerialNumber＆LT; / SPAN＆GT;
    ＆LT; / DIV＆GT;

    ＆LT; D​​IV CLASS =清零＆GT;＆LT; / DIV＆GT;
＆LT; / DIV＆GT;
@ {
   previousOrderId = item.ID;
}

}
 

解决方案

缺少一个/附近的跨度标签，缺少附近的类属性的明确的DIV标签和@ {}周围previousOrderId = item.ID是没有必要的。

  @ {
    INT previousOrderId = 0;
}


@foreach（以模型的VaR项）{

＆LT; D​​IV CLASS =的OrderDetail＆GT;


@if（item.ID！= previousOrderId）{

    ＆LT; D​​IV CLASS =客户＆GT;
        ＆其中，P类=强＆GT;订单ID：＆LT; / P＆GT;
        ＆其中p为H.; @ item.ID＆所述; / P＆GT;
        ＆其中，P类=强＆GT;订购日期：＆LT; / P＆GT;
        ＆LT; P＆GT; @的String.Format（{0：绿}，TimeZoneInfo.ConvertTime（item.DateInitialised，TimeZoneInfo.FindSystemTimeZoneById（GMT标准时间）））＆LT; / P＆GT;
        ＆其中，P类=强＆GT;客户名称：＆LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.Name＆所述; / P＆GT;
        ＆其中，P类=强＆GT;实践名称：＆LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.PracticeName＆所述; / P＆GT;
        ＆其中，P类=强＆GT;客户发送电子邮件：LT; / P＆GT;
        ＆其中p为H.; @ item.WebsiteUser.EMailAddress＆所述; / P＆GT;
    ＆LT; / DIV＆GT;
   }


    ＆LT; D​​IV CLASS =细节＆GT;
        ＆LT;跨度类=强＆GT;许可证密钥：LT; / SPAN＆GT;＆LT;跨度＆GT;＆LT; D​​IV的风格=宽度：140px;溢出：汽车;＆GT; @ item.Licence.LicenceKey＆LT; / DIV＆GT;＆LT ; / SPAN＆GT;
        ＆LT;跨度类=强＆GT;序列号：＆LT; / SPAN＆GT;＆LT;跨度＆GT; @ item.Licence.SerialNumber＆LT; / SPAN＆GT;
    ＆LT; / DIV＆GT;

    ＆LT; D​​IV CLASS =清除＆GT;＆LT; / DIV＆GT;
＆LT; / DIV＆GT;

   previousOrderId = item.ID;


}
 

I think this is a school boy error but can you explain to me and provide the fix to why this view won't work:

@{
    int PreviousOrderId = 0;
}


@foreach (var item in Model) {

<div class="orderdetail">


@if (item.ID != PreviousOrderId){

    <div class="customer">
        <p class="strong">OrderID:</p> 
        <p>@item.ID</p>
        <p class="strong">Order Date:</p>
        <p>@String.Format("{0:g}", TimeZoneInfo.ConvertTime(item.DateInitialised, TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time")))</p>
        <p class="strong">Customer Name:</p> 
        <p>@item.WebsiteUser.Name</p>
        <p class="strong">Practice Name:</p>
        <p>@item.WebsiteUser.PracticeName</p>
        <p class="strong">Customer E-Mail:</p> 
        <p>@item.WebsiteUser.EMailAddress</p>
    </div>
   }


    <div class="detail">
        <span class="strong">Licence Key:</span><span><div style="width:140px; overflow:auto;">@item.Licence.LicenceKey</div></span>
        <span class="strong">Serial No:<span><span>@item.Licence.SerialNumber</span>
    </div>               

    <div class="clear></div>
</div>
@{
   PreviousOrderId = item.ID;
}

}

there is a missing / near a span-tag, a missing " near the class attribute in the clear-div-tag and the @{ } around PreviousOrderId = item.ID wasn't necessary

@{
    int PreviousOrderId = 0;
}


@foreach (var item in Model) {

<div class="orderdetail">


@if (item.ID != PreviousOrderId){

    <div class="customer">
        <p class="strong">OrderID:</p> 
        <p>@item.ID</p>
        <p class="strong">Order Date:</p>
        <p>@String.Format("{0:g}", TimeZoneInfo.ConvertTime(item.DateInitialised, TimeZoneInfo.FindSystemTimeZoneById("GMT Standard Time")))</p>
        <p class="strong">Customer Name:</p> 
        <p>@item.WebsiteUser.Name</p>
        <p class="strong">Practice Name:</p>
        <p>@item.WebsiteUser.PracticeName</p>
        <p class="strong">Customer E-Mail:</p> 
        <p>@item.WebsiteUser.EMailAddress</p>
    </div>
   }


    <div class="detail">
        <span class="strong">Licence Key:</span><span><div style="width:140px; overflow:auto;">@item.Licence.LicenceKey</div></span>
        <span class="strong">Serial No:</span><span>@item.Licence.SerialNumber</span>
    </div>               

    <div class="clear"></div>
</div>

   PreviousOrderId = item.ID;


}