asp.net-mvc 在 MVC Razor 视图页面中使用 string.Format
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using string.Format in MVC Razor view page
提问by panjo
I want to render images in a Razor view using string.Formatlike this ...
我想像这样在 Razor 视图中渲染图像string.Format......
foreach (var p in @Model.Photos)
{
string.Format("<img src='{0}' width='100' alt='{1}' />", p.Path,
p.AlternateText);
}
Something is clearly wrong here, because on rendering this page, I've got nothing inside this section.
这里显然有问题，因为在呈现此页面时，我在此部分中没有任何内容。
回答by SLaks
string.Format()returns a string, which you're discarding.
string.Format()返回一个字符串，您正在丢弃该字符串。
You need to print that string to the page:
您需要将该字符串打印到页面：
@string.Format(...)
Note that since this isn't a statement, there shouldn't be a ;.
请注意，由于这不是语句，因此不应该有;.
Also note that it would be better to use Razor itself:
另请注意，最好使用 Razor 本身：
<img src="@p.Path" width="100" alt="@p.AlternateText" />
回答by Callum Linington
I just simply do this to get around that problem:
我只是简单地这样做来解决这个问题：
@model UXLab.Areas.SectionArea.ViewModels.SectionViewModel
<section>
<header>@Model.Title</header>
<p>
@{var contentBuilder = new System.Text.StringBuilder(); }
@foreach (var link in Model.Links)
{
contentBuilder.append(Html.ActionLink(link.LinkText, link.Action,
link.Controller));
}
@Html.Raw(contentBuilder.ToString())
</p>
</section>
In this example, I loop through some links I want to display to the page which are stored in a ViewModel.
在这个例子中，我循环浏览一些我想显示到页面的链接，这些链接存储在ViewModel.
In order to display the Links on the page, I loop through them all appending them to a StringBuilder, then use Html.Rawto display the raw Html, if you don't use Rawthen you'll not get quotes and things through to the page example:
为了在页面上显示链接，我循环遍历它们，将它们全部附加到 a StringBuilder，然后用于Html.Raw显示原始 Html，如果您不使用，Raw那么您将无法通过页面示例获得引号和内容：
1: @String.Format("\"Hello {0}\"", Model.Name)
2: @Html.Raw(String.Format("\"Hello {0}\"", Model.Name))
Line 1 will display " Hello " Melman
Line 2 will display "Hello Melman"
第 1 行将显示" Hello " Melman
第 2 行将显示"Hello Melman"
Just some stuff I have found out when playing with outputting to the page. The basic idea is that, you build the page html up, then display it. So a store as you go method, once you finished manipulating the html output, you then display it using @outsite of any {}
只是我在玩输出到页面时发现的一些东西。基本思想是，您将页面 html 构建起来，然后显示它。因此，一种随用随存储方法，一旦您完成对 html 输出的操作，您就可以使用@任何外部站点显示它{}
回答by Esteban
It's true using string.Formatis painful in Razor, but you dohave an Html.FormatValue, here is how to use it:
string.Format在 Razor 中使用确实很痛苦，但是您确实有一个Html.FormatValue，这里是如何使用它：
@Html.FormatValue("value", "format")
The method signature is:
方法签名是：
FormatValue(object value, string format)
回答by juFo
I had the same problem and I've done it like this using Url.Content and string.Format:
我遇到了同样的问题，我已经使用 Url.Content 和 string.Format 这样做了：
<img src="@Url.Content(string.Format("~/Content/img/{0}", Resources.MyImage))" />
