Question

I am getting the below error.

I need to uninstall the app and delete all files and folders created either by the application or users in the program files/myapp.

How can I resolve this issue?
Thanks.

Access to the path 'C:\Program Files (x86)\DefaultProgram\Application\app.exe' is denied.

My Code:

protected override void OnAfterUninstall(IDictionary savedState)
        {
            string sFolder = Path.GetDirectoryName(Context.Parameters["assemblypath"]);
            string sUsername = "NT AUTHORITY\\LOCALSERVICE";
            DirectoryInfo myDirectoryInfo = new DirectoryInfo(sFolder);
            DirectorySecurity myDirectorySecurity = myDirectoryInfo.GetAccessControl();
            myDirectorySecurity.AddAccessRule(
                new FileSystemAccessRule(
                    sUsername, FileSystemRights.Read | 
                    FileSystemRights.Write | 
                    FileSystemRights.Modify, InheritanceFlags.ContainerInherit | 
                    InheritanceFlags.ObjectInherit, PropagationFlags.InheritOnly, AccessControlType.Allow));
            myDirectoryInfo.SetAccessControl(myDirectorySecurity);
            base.OnAfterUninstall(savedState);
            string appPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            DeleteDirectory(Path.Combine(appPath, "DB"));
            DeleteDirectory(appPath);
        }

        public static void DeleteDirectory(string target_dir)
        {
            string[] files = Directory.GetFiles(target_dir);
            string[] dirs = Directory.GetDirectories(target_dir);
            foreach (string file in files)
            {
                File.SetAttributes(file, FileAttributes.Normal);
                File.Delete(file);
            }
            foreach (string dir in dirs)
            {
                DeleteDirectory(dir);
            }
            Directory.Delete(target_dir, false);
        } 

Answer 1

You can delete your app.exe in this way on XP

Process.Start("cmd.exe", "/C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del " + 
      Application.ExecutablePath); 
Application.Exit();

or this in Win7 (EDIT2)

Process.Start("cmd.exe", "timeout 5 > Nul & Del " + 
      Application.ExecutablePath); 
Application.Exit();

But you must add in foreach if(file.Contains("app.exe")) continue;

EDIT

protected override void OnAfterUninstall(IDictionary savedState)
    {
        base.OnAfterUninstall(savedState);
        string sFolder = Path.GetDirectoryName(Context.Parameters["assemblypath"]);
        string sUsername = "NT AUTHORITY\\LOCALSERVICE";
        DirectoryInfo myDirectoryInfo = new DirectoryInfo(sFolder);
        DirectorySecurity myDirectorySecurity = myDirectoryInfo.GetAccessControl();
        myDirectorySecurity.AddAccessRule(
            new FileSystemAccessRule(
                sUsername, FileSystemRights.Read | 
                FileSystemRights.Write | 
                FileSystemRights.Modify, InheritanceFlags.ContainerInherit | 
                InheritanceFlags.ObjectInherit, PropagationFlags.InheritOnly, AccessControlType.Allow));
        myDirectoryInfo.SetAccessControl(myDirectorySecurity);
        string appPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
       DeleteDirectory(Path.Combine(appPath, "DB"));
        DeleteDirectory(appPath);
    }

    public static void DeleteDirectory(string target_dir)
    {
        string[] files = Directory.GetFiles(target_dir);
        string[] dirs = Directory.GetDirectories(target_dir);
        foreach (string file in files)
        {
            File.SetAttributes(file, FileAttributes.Normal);
            if(file.Contains("app.exe")) continue;
            File.Delete(file);
        }
        foreach (string dir in dirs)
        {
            DeleteDirectory(dir);
        }
        Directory.Delete(target_dir, false);
    }