如何在ASP.NET MVC中找到动作的绝对URL？

Question

我需要做这样的事情:

<script type="text/javascript">
    token_url = "http://example.com/your_token_url";
</script>

我正在使用MVC的Beta版本,但我无法弄清楚如何获取动作的绝对URL.我想做这样的事情:

<%= Url.AbsoluteAction("Action","Controller")) %>

是否有帮助器或Page方法？

Answer 1

单击此处获取更多信息,但实际上不需要扩展方法.它已经烘焙过,而不是以非常直观的方式.

Url.Action("Action", null, null, Request.Url.Scheme);

Answer 2

扩展UrlHelper

namespace System.Web.Mvc
{
    public static class HtmlExtensions
    {
        public static string AbsoluteAction(this UrlHelper url, string action, string controller)
        {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;

            string absoluteAction = string.Format(
                "{0}://{1}{2}",
                requestUrl.Scheme,
                requestUrl.Authority,
                url.Action(action, controller));

            return absoluteAction;
        }
    }
}

然后这样称呼它

<%= Url.AbsoluteAction("Dashboard", "Account")%>

编辑 - 再生注释

对于已接受的答案,最受欢迎的评论是,This answer is the better one, this way Resharper can still validate that the Action and Controller exists.所以这里是一个如何获得相同行为的示例.

using JetBrains.Annotations

namespace System.Web.Mvc
{
    public static class HtmlExtensions
    {
        public static string AbsoluteAction(
            this UrlHelper url,
            [AspMvcAction]
            string action,
            [AspMvcController]
            string controller)
        {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;

            string absoluteAction = string.Format(
                "{0}://{1}{2}",
                requestUrl.Scheme,
                requestUrl.Authority,
                url.Action(action, controller));

            return absoluteAction;
        }
    }
}

支持信息:

• 为ASP.NET MVC中的自定义助手提供智能感知,导航等功能

Answer 3

<%= Url.Action("About", "Home", null, Request.Url.Scheme) %>
<%= Url.RouteUrl("Default", new { Action = "About" }, Request.Url.Scheme) %>

Answer 4

以@Charlino的答案为指导,我提出了这个问题.

UrlHelper的ASP.NET MVC文档显示,如果传入主机名和协议,Url.Action将返回完全限定的Url.我创建了这些帮助程序以强制提供主机名和协议.多次重载反映了Url.Action的重载:

using System.Web.Routing;

namespace System.Web.Mvc {
    public static class HtmlExtensions {

        public static string AbsoluteAction(this UrlHelper url, string actionName) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, null, (RouteValueDictionary)null, 
                              requestUrl.Scheme, null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            object routeValues) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, null, new RouteValueDictionary(routeValues), 
                              requestUrl.Scheme, null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            RouteValueDictionary routeValues) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, null, routeValues, requestUrl.Scheme, null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            string controllerName) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, controllerName, (RouteValueDictionary)null, 
                              requestUrl.Scheme, null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            string controllerName, 
                                            object routeValues) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, controllerName, 
                              new RouteValueDictionary(routeValues), requestUrl.Scheme, 
                              null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            string controllerName, 
                                            RouteValueDictionary routeValues) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, controllerName, routeValues, requestUrl.Scheme, 
                              null);
        }

        public static string AbsoluteAction(this UrlHelper url, string actionName, 
                                            string controllerName, object routeValues, 
                                            string protocol) {
            Uri requestUrl = url.RequestContext.HttpContext.Request.Url;
            return url.Action(actionName, controllerName, 
                              new RouteValueDictionary(routeValues), protocol, null);
        }

    }
}

Answer 5

带参数的完整答案是：

var url = Url.Action("ActionName", "ControllerName", new { id = "arg_value" }, Request.Url.Scheme);

这将产生一个绝对网址