C# 来自内部文件夹的 ASP.NET Server.Mappath 问题
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ASP.NET Server.Mappath problem from inner folders
提问by Shyju
I have an ASP.NET application where in my APP_Code folder i have a class.In that i have the following code to read the content of an XML file which is in my root folder
我有一个 ASP.NET 应用程序，其中在我的 APP_Code 文件夹中有一个类。我有以下代码来读取位于我的根文件夹中的 XML 文件的内容
XmlDocument xmlSiteConfig = new XmlDocument();
xmlSiteConfig.Load(System.Web.HttpContext.Current.Server.MapPath("../myConfig.xml"));
My Root folder is having several folders with nested inner folders for some.From the first level of folders when i call the piece of code in the Appcode class,I am able to load the XML file correctly since the path is correct.Now if i call the same piece of code from an innner folder,I am getting an error .If i change the code to the below it will work fine
我的根文件夹有几个文件夹，其中包含一些嵌套的内部文件夹。当我在 Appcode 类中调用这段代码时，从第一级文件夹开始，我能够正确加载 XML 文件，因为路径是正确的。现在如果我从内部文件夹调用同一段代码，我收到一个错误。如果我将代码更改为下面的代码，它将正常工作
xmlSiteConfig.Load(System.Web.HttpContext.Current.Server.MapPath("../../myConfig.xml"));
How can i solve this.I dont want to change the file path for various calls to this code.With what piece of code I can solve the issue so that the program will load the XML file irrespective of the calling position . Any advice ?
我该如何解决这个问题。我不想更改对此代码的各种调用的文件路径。我可以用什么代码来解决问题，以便程序将加载 XML 文件，而不管调用位置如何。有什么建议吗？
Thanks in advance
提前致谢
采纳答案by David M
If it's in the root folder, use this:
如果它在根文件夹中，请使用：
Server.MapPath("~/myConfig.xml")
This will work from any directory.
这将适用于任何目录。
回答by Ian
Prefix your path string with a tilde (~) - this represents the root of the website:
用波浪号 (~) 前缀您的路径字符串 - 这代表网站的根：
xmlSiteConfig.Load(System.Web.HttpContext.Current.Server.MapPath("~/myConfig.xml"));
回答by Tommy
Does Server.MapPath("~/xmlFile.xml") work for you? The ~/ tells the .NET application to always start from the application root. If your XML file is in a sub folder (not where you are calling the function but the actual physical file), then you would use server.mappath("~/myfolder/xmlFile.xml").
Server.MapPath("~/xmlFile.xml") 对你有用吗？~/ 告诉 .NET 应用程序总是从应用程序根启动。如果您的 XML 文件位于子文件夹中（不是您调用函数的位置，而是实际的物理文件），那么您将使用 server.mappath("~/myfolder/xmlFile.xml")。
回答by Edwin Tai
the method System.Web.HttpContext.Current.Server.MapPath("") is to get the root path of the web app. so System.Web.HttpContext.Current.Server.MapPath("../myConfig.xml") is to get the father path of the web app it is wrong if your file is not here. you can use System.Web.HttpContext.Current.Server.MapPath("/path") instead.
System.Web.HttpContext.Current.Server.MapPath("") 方法是获取 Web 应用程序的根路径。所以 System.Web.HttpContext.Current.Server.MapPath("../myConfig.xml") 是为了获取 web 应用程序的父路径，如果你的文件不在这里，这是错误的。您可以改用 System.Web.HttpContext.Current.Server.MapPath("/path") 。
in other hand,you can use "~" to mean the root path in some asp.net control.
另一方面，您可以使用“~”来表示某些 asp.net 控件中的根路径。
回答by Chirag Khatsuriya
Server.MapPath("~/MYXML.xml")
In this "~" means, root directory. If you want to find in any sub directory then you should give path e.g,
这里的“~”表示根目录。如果你想在任何子目录中查找，那么你应该给出路径，例如，
Server.MapPath("~/App_Data/MyXml.xml")
