image - Action 图像 MVC3 Razor

Question

在 MVC3 中使用 Razor 用图像替换链接的最佳方法是什么？我现在只是这样做:

<a href="@Url.Action("Edit", new { id=MyId })"><img src="../../Content/Images/Image.bmp", alt="Edit" /></a> 

有更好的方法吗？

Answer 1

您可以为 HtmlHelper 创建扩展方法来简化 CSHTML 文件中的代码。您可以使用如下方法替换标签:

// Sample usage in CSHTML
@Html.ActionImage("Edit", new { id = MyId }, "~/Content/Images/Image.bmp", "Edit")

以下是上述代码的示例扩展方法:

// Extension method
public static MvcHtmlString ActionImage(this HtmlHelper html, string action, object routeValues, string imagePath, string alt)
{
    var url = new UrlHelper(html.ViewContext.RequestContext);

    // build the <img> tag
    var imgBuilder = new TagBuilder("img");
    imgBuilder.MergeAttribute("src", url.Content(imagePath));
    imgBuilder.MergeAttribute("alt", alt);
    string imgHtml = imgBuilder.ToString(TagRenderMode.SelfClosing);

    // build the <a> tag
    var anchorBuilder = new TagBuilder("a");
    anchorBuilder.MergeAttribute("href", url.Action(action, routeValues));
    anchorBuilder.InnerHtml = imgHtml; // include the <img> tag inside
    string anchorHtml = anchorBuilder.ToString(TagRenderMode.Normal);

    return MvcHtmlString.Create(anchorHtml);
}