C# 获取 .NET Web 应用程序中的当前目录
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Getting current directory in .NET web application
提问by Julian Coltea
So I have a web project, and I'm trying to get the root directory of the website using the c# method Directory.GetCurrentDirectory(). I don't want to be using a static path as the file locations will be changing in the future. This method is running in my imageProcess.aspx.cs file, but where I thought it would return:
所以我有一个 web 项目，我正在尝试使用 c# 方法获取网站的根目录Directory.GetCurrentDirectory()。我不想使用静态路径，因为文件位置将来会发生变化。这个方法在我的 imageProcess.aspx.cs 文件中运行，但我认为它会返回：
C:\Users\tcbl\documents\visual studio 2010\Projects\ModelMonitoring\ModelMonitoring\imageProcess.aspx.cs
I'm instead getting:
我反而得到：
C:\Program Files\Common Files\Microsoft Shared\DevServer.0\
Can anyone explain why this is happening and what a possible solution might be? Thanks a lot.
谁能解释为什么会发生这种情况以及可能的解决方案是什么？非常感谢。
采纳答案by SLaks
The current directory is a system-level feature; it returns the directory that the server was launched from. It has nothing to do with the website.
当前目录是系统级功能；它返回启动服务器的目录。它与网站无关。
You want HttpRuntime.AppDomainAppPath.
你要HttpRuntime.AppDomainAppPath。
If you're in an HTTP request, you can also call Server.MapPath("~/Whatever").
如果您在 HTTP 请求中，您还可以调用Server.MapPath("~/Whatever").
回答by Harshal Doshi Jain
Use this code:
使用此代码：
HttpContext.Current.Server.MapPath("~")
Detailed Reference:
详细参考：
Server.MapPathspecifies the relative or virtual path to map to a physical directory.
Server.MapPath指定映射到物理目录的相对或虚拟路径。
Server.MapPath(".")returns the current physical directory of the file (e.g. aspx) being executedServer.MapPath("..")returns the parent directoryServer.MapPath("~")returns the physical path to the root of the applicationServer.MapPath("/")returns the physical path to the root of the domain name (is not necessarily the same as the root of the application)
Server.MapPath(".")返回正在执行的文件（例如 aspx）的当前物理目录Server.MapPath("..")返回父目录Server.MapPath("~")返回应用程序根目录的物理路径Server.MapPath("/")返回域名根的物理路径（不一定与应用的根相同）
An example:
一个例子：
Let's say you pointed a web site application (http://www.example.com/) to
假设您将一个网站应用程序 ( http://www.example.com/) 指向
C:\Inetpub\wwwroot
and installed your shop application (sub web as virtual directory in IIS, marked as application) in
并将您的商店应用程序（子网站作为 IIS 中的虚拟目录，标记为应用程序）安装在
D:\WebApps\shop
For example, if you call Server.MapPathin following request:
例如，如果您调用Server.MapPath以下请求：
http://www.example.com/shop/products/GetProduct.aspx?id=2342
then:
然后：
Server.MapPath(".") returns D:\WebApps\shop\products
Server.MapPath("..") returns D:\WebApps\shop
Server.MapPath("~") returns D:\WebApps\shop
Server.MapPath("/") returns C:\Inetpub\wwwroot
Server.MapPath("/shop") returns D:\WebApps\shop
If Path starts with either a forward (/) or backward slash (), the MapPathmethod returns a path as if Path were a full, virtual path.
如果 Path 以正斜杠 (/) 或反斜杠 () 开头，则该MapPath方法返回一个路径，就好像 Path 是完整的虚拟路径一样。
If Path doesn't start with a slash, the MapPathmethod returns a path relative to the directory of the request being processed.
如果 Path 不以斜杠开头，则该MapPath方法返回相对于正在处理的请求的目录的路径。
Note: in C#, @ is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.
注意：在 C# 中，@ 是逐字文字字符串运算符，这意味着该字符串应该“按原样”使用，而不是针对转义序列进行处理。
Footnotes
脚注
Server.MapPath(null)and Server.MapPath("")will produce this effect too.
Server.MapPath(null)并且Server.MapPath("")也会产生这种效果。
