More info can be found at, https://docs.microsoft.com/en-us/dotnet/api/system.environment.specialfolder?view=netframework-4.7.2

Code example

// C:\ProgramData\
var path1 = System.Environment.GetFolderPath(System.Environment.SpecialFolder.CommonApplicationData);

// C:\Users\USERNAME\AppData\Roaming
var path2 = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);