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我有以下视图，如果POnumber为空，它将返回一些文本。 我想我需要有而不是if（Model.Invoice.PONumber == null）是一个检查机制（可能多个if语句），将检查字段LineNumber，Description，UnitOfMeasure，QtyOrdered，如果它们中的任何一个是它将用N/A或空白空间替换它，但它仍然允许用户查看其余可用信息。 你有什么要求吗？我是MVC的新手，任何帮助都会有所帮助。MVC3 ASP在视图中用空白空间替换空值
预先感谢您的时间和帮助下，鲍比
<div class="contentWrapper2">
<div class="content2">
<div class="clr lfl w100">
<h1>Invoice Detail</h1>
<div class="return-btn">
<a class="btn btnStyleC btn-back-invoice" href="@Url.Action("InvoiceHistory", "Account")">
Back to Invoice List</a>
</div>
</div>
@if (Model.ErpError.Length > 0)
{
<div class="clr lfl w100 error">
@Html.Raw(Model.ErpError)
</div>
}
else
{
if(Model.Invoice.PONumber == null)
{
<div class="lfl w100 clr messaging">
<p>No information available at the moment for current invoice.
Please call our sales department for further assistance.
</p>
</div>
}
else
{
<div class="clr lfl w100">
<div class="order-number-date">
<table>
<tr>
<th class="col-1">
<h3>Invoice #:</h3>
</th>
<td class="col-2">
<h3>@Model.Invoice.InvoiceNumber</h3>
</td>
</tr>
<tr>
<th class="col-1">
<h3>Invoice Date:</h3>
</th>
<td class="col-2">
<h3>@Model.Invoice.InvoiceDate.ToShortDateString()</h3>
</td>
</tr>
</table>
</div>
<div class="order-number-date">
<table>
<tr>
<th class="col-1">
<h3>Order #:</h3>
</th>
<td class="col-2">
<h3>@Model.Invoice.OrderNumber</h3>
</td>
</tr>
<tr>
<th class="col-1">
<h3>PO #:</h3>
</th>
<td class="col-2">
<h3>@Model.Invoice.PONumber</h3>
</td>
</tr>
<tr>
<th class="col-1">
<h3>Due Date:</h3>
</th>
<td class="col-2">
<h3>@Model.Invoice.DueDate.ToShortDateString()</h3>
</td>
</tr>
</table>
</div>
</div>
<div class="clr lfl w100">
<div class="bill-ship">
<table>
<tr>
<th>
<h4>Billing Information</h4>
</th>
</tr>
<tr>
<td>@Model.Invoice.BTDisplayName
</td>
</tr>
<tr>
<td>
<@Html.Raw(Model.Invoice.BTAddress1)
</td>
</tr>
@if (!string.IsNullOrEmpty(Model.Invoice.BTAddress2))
{
<tr>
<td>@Html.Raw(Model.Invoice.BTAddress2)
</td>
</tr>
}
<tr>
<td>@Html.CityCommaStateZip(Model.Invoice.BTCity, Model.Invoice.BTState, Model.Invoice.BTZip)</td>
</tr>
<tr>
<td>@Model.Invoice.BTCountry
</td>
</tr>
<tr>
<td>@Model.Invoice.BTPhone1</td>
</tr>
<tr>
<td>@Model.Invoice.BTEmail
</td>
</tr>
</table>
</div>
</div>
if (Model.Invoice.InvoiceLines.Count > 0)
{
<div class="clr lfl w100 line-item-detail">
<table class="info-tbl">
<tr>
<th class="vid-item">Item #</th>
<th class="vid-desc">Description</th>
<th class="vid-um">
U/M
</th>
<th class="vid-qty">
Qty
</th>
<th class="vid-ship">
Ship Date
</th>
@if (Model.ShowPackslip)
{
<th class="vid-pack">Pack Slip</th>
}
<th class="vid-unit">Unit Price</th>
<th class="vid-ext">Ext Price</th>
</tr>
@foreach (var invoiceLine in Model.Invoice.InvoiceLines)
{
<tr>
<td class="vid-line">@invoiceLine.LineNumber</td>
<td class="vid-desc">@invoiceLine.Description</td>
<td class="vid-um">@invoiceLine.UnitOfMeasure</td>
<td class="vid-qty">@invoiceLine.QtyOrdered</td>
<td class="vid-ship">
@if (invoiceLine.ShipDate.ToShortDateString() == "1/1/0001")
{
}
else
{
@invoiceLine.ShipDate.ToShortDateString()
}
</td>
@if (Model.ShowPackslip)
{
<td class="vid-pack">
<a href="@Url.RouteUrl(new { controller = "Account", action = "ShipmentDetail", PackSlipNum = invoiceLine.PackSlip })">@invoiceLine.PackSlip</a>
</td>
}
<td class="vid-unit">@invoiceLine.UnitPrice.ToCurrency()
</td>
<td class="vid-ext">@invoiceLine.ExtendedPrice.ToCurrency()
</td>
</tr>
}
</table>
</div>
}
<div class="clr lfl w100">
<table class="tbl-total">
<tr class="subtotal">
<th class="col-1">Subtotal</th>
<td class="col-2">@Model.Invoice.OrderSubTotal.ToCurrency()
</td>
</tr>
@if (Model.Invoice.DollarOffOrder > 0)
{
<tr>
<th class="col-1">Order Discount</th>
<td class="col-2">@Model.Invoice.DollarOffOrder.ToCurrency()</td>
</tr>
}
@if (Model.Invoice.ShippingAndHandling > 0)
{
<tr>
<th class="col-1">Shipping</th>
<td class="col-2">@Model.Invoice.ShippingAndHandling.ToCurrency()
</td>
</tr>
}
@if (Model.Invoice.MiscCharges > 0)
{
<tr>
<th class="col-1">Misc. Charges</th>
<td class="col-2">@Model.Invoice.MiscCharges.ToCurrency()</td>
</tr>
}
<tr>
<th class="col-1">Sales Tax</th>
<td class="col-2">@Model.Invoice.TotalTax.ToCurrency()</td>
</tr>
<tr>
<th class="col-1">Invoice Total</th>
<td class="col-2">@Model.Invoice.InvoiceTotal.ToCurrency()</td>
</tr>
</table>
</div>
<div class="clr lfl w100">
<a class="btn btnStyleB btn-print" href="javascript:window.print();">Print</a>
</div>
}
}
</div>
</div>