C# 2008 SP1
I am using the code below:
However, I am getting an exception that points to the location of where my application is running from:
Could not find a part of the path 'D:\Projects\SubVersionProjects\CatDialer\bin\Debug\%AppData%\DateLinks.xml'.
I thought the
%AppData% should find the relative path. When I go
Start|Run|%AppData% windows explorer takes me to that directory.
I can not put the full path in, as the user is different on each client machine.
To get the AppData directory, it's best to use the
using System if not present).
%AppData% is an environment variable, and they are not automatically expanded anywhere in .NET, although you can explicitly use the
Environment.ExpandEnvironmentVariable method to do so. I would still strongly suggest that you use
GetFolderPath however, because as Johannes Rössel points out in the comment,
%AppData% may not be set in certain circumstances.
Finally, to create the path as shown in your example:
var fileName = Path.Combine(Environment.GetFolderPath( Environment.SpecialFolder.ApplicationData), "DateLinks.xml");
The BEST way to use the AppData directory, IS to use
- it replaces parts of your string with valid directories or whatever
- it is case-insensitive
- it is easy and uncomplicated
- it is a standard
- good for dealing with user input
string path; path = @"%AppData%\stuff"; path = @"%aPpdAtA%\HelloWorld"; path = @"%progRAMfiLES%\Adobe;%appdata%\FileZilla"; // collection of paths path = Environment.ExpandEnvironmentVariables(path); Console.WriteLine(path);
%ALLUSERSPROFILE% C:\ProgramData %APPDATA% C:\Users\Username\AppData\Roaming %COMMONPROGRAMFILES% C:\Program Files\Common Files %COMMONPROGRAMFILES(x86)% C:\Program Files (x86)\Common Files %COMSPEC% C:\Windows\System32\cmd.exe %HOMEDRIVE% C: %HOMEPATH% C:\Users\Username %LOCALAPPDATA% C:\Users\Username\AppData\Local %PROGRAMDATA% C:\ProgramData %PROGRAMFILES% C:\Program Files %PROGRAMFILES(X86)% C:\Program Files (x86) (only in 64-bit version) %PUBLIC% C:\Users\Public %SystemDrive% C: %SystemRoot% C:\Windows %TEMP% and %TMP% C:\Users\Username\AppData\Local\Temp %USERPROFILE% C:\Users\Username %WINDIR% C:\Windows
The path is different if you're talking ASP.NET.
I couldn't find any of the 'SpecialFolder' values that pointed to /App_Data for ASP.NET.
Instead you need to do this:
(Note: You don't need the 'Current' property in an MVC Controller)
If theres another more 'abstract' way to get to
App_Data would love to hear how.
You can also use
to expand the
In .net2.0 you can use the variable
AppData Local aka (
AppData Roaming aka (
Additionally, it could be handy to know:
Environment.SpecialFolder.ProgramFiles- for Program files X64 folder
Environment.SpecialFolder.ProgramFilesX86- for Program files X86 folder
For the full list check here.
I don't think putting %AppData% in a string like that will work.
Just wanted to share another way of accessing 'App_Data' folder in my mvc application in case that someone needs this.
This is working for me in a console application -
string appData = System.Environment.GetEnvironmentVariable("APPDATA");
For ASP.NET, the
Load User Profile setting needs to be set on the app pool but that's not enough. There is a hidden setting named
\Windows\System32\inetsrv\Config\applicationHost.config, which for some reason is turned off by default, instead of on as described in the documentation. You can either change the default or set it on your app pool. All the methods on the
Environment class will then return proper values.