how to read audio file from lock folder of the system in c#

Question

 *-- Code to lock the folder 

DirectoryInfo d = new DirectoryInfo(folderDialog.SelectedPath);

try

{

string selectedpath = d.Parent.FullName + d.Name;

if (folderDialog.SelectedPath.LastIndexOf(".{") == -1)// if folder is unlock

{

//if (checkBox1.Checked)

//setpassword(folderBrowserDialog1.SelectedPath); // password not required to lock the folder

if (!d.Root.Equals(d.Parent.FullName))

d.MoveTo(d.Parent.FullName + "\\" + d.Name + _lockKey);

else d.MoveTo(d.Parent.FullName + d.Name + _lockKey);

tb_SlctFldr.Text = folderDialog.SelectedPath;

// pictureBox1.Image = Image.FromFile(Application.StartupPath + "\\lock.jpg");

}

 

 

now folder is locked, how can i read the file from locked folder without unlocking folder