如何将URL参数保留在ASP.NET MVC中？ [英] How to leave URL parameters unescaped in ASP.NET MVC?

问题描述

我注意到Stackoverflow登录/注销链接上的returnurl URL参数没有被转义，但是当我尝试将路径作为参数添加到路由时，它被转义了。

I've noticed the returnurl URL parameter on the Stackoverflow login/logout links are not escaped but when I try to add path as a parameter to a route it gets escaped.

因此/ login？returnurl = / questions / ask显示/ login？returnurl =％2fquestions％2fask有点丑陋。

So /login?returnurl=/questions/ask shows /login?returnurl=%2fquestions%2fask and it's kind of ugly. How do I get it to not escape the returnurl value?

这是我在代码中正在做的事情：

Here's what I'm doing in the code:

Html.ActionLink("Login", "Login", "Account", new { returnurl=Request.Path }, null)

推荐答案

我理解有关编码发生的评论之一是有原因的；

I understand one of the comments about encoding happening for a reason; this would only be an exception, not the rule.

这是我的内容，该如何加以改进？

Here's what I put together, how can it be improved?

    public static string ActionLinkNoEscape(this HtmlHelper html, string linkText, string actionName, string controllerName, object values, object htmlAttributes)
    {
        RouteValueDictionary routeValues = new RouteValueDictionary(values);
        RouteValueDictionary htmlValues = new RouteValueDictionary(htmlAttributes);

        UrlHelper urlHelper = new UrlHelper(html.ViewContext.RequestContext, RouteTable.Routes);
        string url = urlHelper.Action(actionName, controllerName);
        url += "?";
        List<string> paramList = new List<string>();
        foreach (KeyValuePair<string, object> pair in routeValues)
        {
            object value = pair.Value ?? "";
            paramList.Add(String.Concat(pair.Key, "=", Convert.ToString(value, CultureInfo.InvariantCulture)));
        }
        url += String.Join("&", paramList.ToArray());

        TagBuilder builder = new TagBuilder("a");
        builder.InnerHtml = string.IsNullOrEmpty(linkText) ? "" : HttpUtility.HtmlEncode(linkText);
        builder.MergeAttributes<string, object>(htmlValues);
        builder.MergeAttribute("href", url);
        return builder.ToString(TagRenderMode.Normal);
    }

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