Question

For example if the user is currently running VS2008 then I want the value VS2008.

Answer 1

I am assuming you want to get the name of the process owning the currently focused window. With some P/Invoke:

// The GetForegroundWindow function returns a handle to the foreground window // (the window  with which the user is currently working). [System.Runtime.InteropServices.DllImport('user32.dll')] private static extern IntPtr GetForegroundWindow();  // The GetWindowThreadProcessId function retrieves the identifier of the thread // that created the specified window and, optionally, the identifier of the // process that created the window. [System.Runtime.InteropServices.DllImport('user32.dll')] private static extern Int32 GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);  // Returns the name of the process owning the foreground window. private string GetForegroundProcessName() {     IntPtr hwnd = GetForegroundWindow();      // The foreground window can be NULL in certain circumstances,      // such as when a window is losing activation.     if (hwnd == null)         return 'Unknown';      uint pid;     GetWindowThreadProcessId(hwnd, out pid);      foreach (System.Diagnostics.Process p in System.Diagnostics.Process.GetProcesses())     {         if (p.Id == pid)             return p.ProcessName;     }      return 'Unknown'; }