C# Server.MapPath 和 HostingEnvironment.MapPath 有什么区别？
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What is the difference between Server.MapPath and HostingEnvironment.MapPath?
提问by empi
Is there any difference between Server.MapPath()and HostingEnvironment.MapPath()? Does Server.MapPath()have any advantages over HostingEnvironment.MapPath()?
有什么区别Server.MapPath()和HostingEnvironment.MapPath()？是否Server.MapPath()有在任何优势HostingEnvironment.MapPath()？
My original problem was mapping the file path on a server when the HttpContextis not present and I cannot pass a Servervariable from Global.asaxto my method.
我最初的问题是在HttpContext不存在的情况下映射服务器上的文件路径，并且我无法将Server变量传递Global.asax给我的方法。
I used HostingEnvironment.MapPath()instead since it doesn't need HttpContext. Are there any situations when these two methods will give different results?
我HostingEnvironment.MapPath()改用了，因为它不需要HttpContext. 是否存在这两种方法会给出不同结果的情况？
采纳答案by Philippe Leybaert
Server.MapPath()eventually calls HostingEnvironment.MapPath(), but it creates a VirtualPathobject with specific options:
Server.MapPath()最终调用HostingEnvironment.MapPath()，但它会创建一个VirtualPath具有特定选项的对象：
The
VirtualPathobject passed toHostingEnvironment.MapPath()is constructed like this:VirtualPath.Create(path, VirtualPathOptions.AllowAllPath|VirtualPathOptions.AllowNull);
VirtualPath传递给的对象HostingEnvironment.MapPath()是这样构造的：VirtualPath.Create(path, VirtualPathOptions.AllowAllPath|VirtualPathOptions.AllowNull);
Edit: in reality, the only difference is that you are allowed to pass null to Server.MapPath(), but not to HostingEnvironment.MapPath()
编辑：实际上，唯一的区别是您可以将 null 传递给Server.MapPath()，但不能传递给HostingEnvironment.MapPath()
回答by Mark Struzinski
Server.MapPath()requires an HttpContext. HostingEnvironment.MapPathdoes not.
Server.MapPath()需要一个HttpContext. HostingEnvironment.MapPath才不是。
