C# Response.Redirect 使用 ~ Path
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Response.Redirect using ~ Path
提问by 1kevgriff
I have a method that where I want to redirect the user back to a login page located at the root of my web application.
我有一个方法，我想将用户重定向回位于我的 Web 应用程序根目录的登录页面。
I'm using the following code:
我正在使用以下代码：
Response.Redirect("~/Login.aspx?ReturnPath=" + Request.Url.ToString());
This doesn't work though. My assumption was that ASP.NET would automatically resolve the URL into the correct path. Normally, I would just use
但这不起作用。我的假设是 ASP.NET 会自动将 URL 解析为正确的路径。通常，我只会使用
Response.Redirect("../Login.aspx?ReturnPath=" + Request.Url.ToString());
but this code is on a master page, and can be executed from any folder level. How do I get around this issue?
但此代码位于母版页上，可以从任何文件夹级别执行。我该如何解决这个问题？
采纳答案by Duncan Smart
I think you need to drop the "~/" and replace it with just "/", I believe / is the root
我认为你需要去掉“~/”并用“/”替换它，我相信/是根
STOP RIGHT THERE!:-) unless you want to hardcode your web app so that it can only be installed at the root of a web site.
停在那儿！:-) 除非您想硬编码您的网络应用程序，以便它只能安装在网站的根目录下。
"~/" isthe correct thing to use, but the reason that your original code didn't work as expected is that ResolveUrl(which is used internally by Redirect) tries to first work out if the path you are passing it is an absolute URL (e.g. "**http://server/**foo/bar.htm" as opposed to "foo/bar.htm") - but unfortunately it does this by simply looking for a colon character ':' in the URL you give it. But in this case it finds a colon in the URL you give in the ReturnPathquery string value, which fools it - therefore your '~/' doesn't get resolved.
"~/"是正确的用法，但是您的原始代码没有按预期工作的原因是ResolveUrl（由 内部使用Redirect）首先尝试确定您传递的路径是否是绝对 URL（例如“** http://server/**foo/bar.htm”而不是“foo/bar.htm”） - 但不幸的是，它只是通过在您提供的 URL 中查找冒号字符 ':' 来实现的它。但在这种情况下，它会在您在ReturnPath查询字符串值中给出的 URL 中找到一个冒号，这会愚弄它 - 因此您的 '~/' 没有得到解析。
The fix is that you should be URL-encoding the ReturnPathvalue which escapes the problematic ':' along with any other special characters.
解决方法是您应该对ReturnPath转义有问题的 ':' 以及任何其他特殊字符的值进行 URL 编码。
Response.Redirect("~/Login.aspx?ReturnPath=" + Server.UrlEncode(Request.Url.ToString()));
Additionally, I recommend that you (or anyone) never use Uri.ToString- because it gives a human-readable, more "friendly" version of the URL - not a necessarily correct one (it unescapes things). Instead use Uri.AbsoluteUri - like so:
此外，我建议您（或任何人）永远不要使用Uri.ToString- 因为它提供了一个人类可读的、更“友好”的 URL 版本 - 不一定是正确的（它取消转义）。而是使用 Uri.AbsoluteUri - 像这样：
Response.Redirect("~/Login.aspx?ReturnPath=" + Server.UrlEncode(Request.Url.AbsoluteUri));
回答by Marshall
What about using
怎么用
Response.Redirect(String.Format("http://{0}/Login.aspx?ReturnPath={1}", Request.ServerVariables["SERVER_NAME"], Request.Url.ToString()));
回答by Pavan k
you can resolve the URL first Response.Redirect("~/Login.aspx); and add the parameters after it got resolved.
您可以先解析 URL Response.Redirect("~/Login.aspx); 并在解析后添加参数。
