How can I create a folder in the app folder in the user's AppData folder e.g. C:\User\AppData-CodePudding

I've tried this:

var systemPath = System.Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
var complete = Path.Combine(systemPath, extractfilename);

But it results in:

C:\ProgramData\Extract.txt

My expected output is:

C:\User\AppData\Extract.txt

CodePudding user response：

`C:\User\AppData\Local`

Use Environment.SpecialFolder.LocalApplicationData:

The directory that serves as a common repository for application-specific data that is used by the current, non-roaming user.

`C:\User\AppData\Roaming`

Use Environment.SpecialFolder.ApplicationData:

The directory that serves as a common repository for application-specific data for the current roaming user. A roaming user works on more than one computer on a network. A roaming user's profile is kept on a server on the network and is loaded onto a system when the user logs on.

CodePudding user response：

You need to create file in Environment.SpecialFolder.ApplicationData folder. There is another way also to get its value, so you can use it also and append the path.

e.g.

string path;
path = @"%AppData%\test";

Environment.ExpandEnvironmentVariables(path);

CodePudding user response：

This will create a folder named "MyName" in "%appdata%".

    string directoryName = "MyName";
    string appDataPath =  Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
    string mainPath = Path.Combine(appDataPath, directoryName);
    Directory.CreateDirectory(mainPath);

This will create a file in "%appdata%" called "MyFile.txt" which says "Hello World".

    string text = "Hello Word";
    string fileName = "MyFile.txt";
    string appDataPath =  Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
    string mainPath = Path.Combine(appDataPath, fileName);
    File.WriteAllText(mainPath, text);