C# 不能使用 Server.MapPath
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Cannot use Server.MapPath
提问by a1204773
What I must do to make Server.MapPathwork?
I have using System.Web;
我必须做什么才能Server.MapPath工作？
我有using System.Web;
what else? When I type Serverthere is no quick result option (intelli-sense) for Server.
还有什么？当我输入时Server，没有快速结果选项（智能感知）Server。
Any help?
有什么帮助吗？
采纳答案by DotNetUser
you can try using this
你可以尝试使用这个
System.Web.HttpContext.Current.Server.MapPath(path);
or use HostingEnvironment.MapPath
或使用 HostingEnvironment.MapPath
System.Web.Hosting.HostingEnvironment.MapPath(path);
回答by Leandro Gomide
Your project needs to reference assembly System.Web.dll. Server is an object of type HttpServerUtility. Example:
您的项目需要引用 assembly System.Web.dll。服务器是一个类型的对象HttpServerUtility。例子：
HttpContext.Current.Server.MapPath(path);
回答by jabu.hlong
Try adding System.Webas a reference to your project.
尝试添加System.Web作为对您的项目的引用。
回答by Aaditya Dubey
You need to add reference (System.Web)
Reference to System.Web
您需要添加引用 ( System.Web)
引用 System.Web
回答by jdisla
Firt add a reference to System.web, if you don't have. Do that in the Referencesfolder.
System.web如果没有，请先添加对 的引用。在References文件夹中执行此操作。
You can then use Hosting.HostingEnvironment.MapPath(path);
然后你可以使用 Hosting.HostingEnvironment.MapPath(path);
回答by Ravindra Singh Chhabra
System.Web.HttpContext.Current.Server.MapPath("~/")gives null if we call it from a thread.
System.Web.HttpContext.Current.Server.MapPath("~/")如果我们从线程调用它，则返回 null。
So, Try to use
所以，尝试使用
System.Web.Hosting.HostingEnvironment.MapPath("~/")
System.Web.Hosting.HostingEnvironment.MapPath("~/")
回答by user13048334
bool IsExist = System.IO.Directory.Exists(HttpContext.Current.Server.MapPath("/UploadedFiles/"));
if (!IsExist)
System.IO.Directory.CreateDirectory(HttpContext.Current.Server.MapPath("/UploadedFiles/"));
StreamWriter textWriter = File.CreateText(Path.Combine(HttpContext.Current.Server.MapPath("/UploadedFiles/") + "FileName.csv"));
var csvWriter = new CsvWriter(textWriter, System.Globalization.CultureInfo.CurrentCulture);
csvWriter.WriteRecords(classVM);
回答by Guy Cothal
I know this post is a few years old, but what I do is add this line to the top of your class and you will still be able to user Server.MapPath
我知道这篇文章已经有几年了，但我所做的是将这一行添加到您班级的顶部，您仍然可以使用 Server.MapPath
Dim Server = HttpContext.Current.Server
or u can make a function
或者你可以做一个功能
Public Function MapPath(sPath as String)
return HttpContext.Current.Server.MapPath(sPath)
End Function
I am all about making things easier. I have also added it to my Utilities class just in case i run into this again.
我所做的就是让事情变得更简单。我还将它添加到我的 Utilities 类中，以防我再次遇到这个问题。
