Using Server MapPath in external C Classes in ASP NET

Question

I m trying to get the absolute path of certain files in a C  class   Server MapPath works great of course for ASPX and their code-behind pages  but that doesn t exist in another class file   I tried HostingEnvironment MapPath    but that complains that the relative virtual path isn t allowed   Any thoughts   System Web is already imported

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Whether you re running within the context of ASP NET or not  you should be able to use HostingEnvironment ApplicationPhysicalPath

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you can also use   var path   System Web Hosting HostingEnvironment MapPath    App Data myfile txt     if   var path   Server MapPath    App Data    var fullpath   Path Combine path    myfile txt      is inaccessible

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System Reflection Assembly GetAssembly type  Location   IF the file you are trying to get is the assembly location for a type   But if the files are relative to the assembly location then you can use this with System IO namespace to get the exact path of the file

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This one helped for me    System Web HttpContext Current Server MapPath            FileStream fileStream   new FileStream System Web HttpContext Current Server MapPath    File txt    FileMode OpenOrCreate  FileAccess ReadWrite  FileShare ReadWrite

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I use this too   System Web HTTPContext Current Server MapPath

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class test   public static void useServerPath string path       if  File Exists path              do whatever you wabt   else                 Now when you call the method from the codebehind  for example    protected void BtAtualizacao Click object sender  EventArgs e                         string path   Server MapPath  Folder        anifile txt                test useServerPath path       in this way your code is to simple and with one method u can use multiple path for each call

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Can t you just add a reference to System Web and then you can use Server MapPath    Edit  Nowadays I d recommend using the HostingEnvironment MapPath Method   It s a static method in System Web assembly that Maps a virtual path to a physical path on the server  It doesn t require a reference to HttpContext

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The ServerUtility class is available as an instance in your HttpContext   If you re in an environment where you know it ll be executed inside the ASP Net pipeline  you can use  HttpContext Current Server MapPath     You ll have to import System Web though

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The server mappath     will work on aspx page if you want to get the absolute path from a class file you have to use this-  HttpContext Current Server MapPath    EmailLogic RegistrationTemplate html

[c#] Using Server.MapPath in external C# Classes in ASP.NET

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