How can I create/edit/add folder permission to specific folder? There is a folder called "test" in local disk C. How do I set permission to that folder using C#?

I wrote some code already:

```
public void getusers()
{
    SelectQuery squery = new SelectQuery("Win32_UserAccount", "Domain='" + System.Environment.UserDomainName.ToString() + "'");
    try
    {
        ManagementObjectSearcher msearchar = new ManagementObjectSearcher(squery);

        foreach (ManagementObject mobject in msearchar.Get())
        {
            comboBox1.Items.Add(mobject["Name"]);
        }
    }
    catch (Exception e) { MessageBox.Show(e.ToString()); }
}

private void button1_Click(object sender, EventArgs e)
{
    FolderBrowserDialog fbd = new FolderBrowserDialog();
    fbd.ShowDialog();
    textBox1.Text = fbd.SelectedPath.ToString();
}

private void button2_Click(object sender, EventArgs e)
{
    DirectoryInfo myDirectoryInfo = new DirectoryInfo(textBox1.Text);

    DirectorySecurity myDirectorySecurity = myDirectoryInfo.GetAccessControl();
    string User = System.Environment.UserDomainName + "\\" + comboBox1.SelectedItem.ToString();

    myDirectorySecurity.AddAccessRule(new FileSystemAccessRule(User, FileSystemRights.FullControl, InheritanceFlags.ContainerInherit, PropagationFlags.None, AccessControlType.Allow));
    //myDirectorySecurity.AddAccessRule(new FileSystemAccessRule(User, FileSystemRights.Write, InheritanceFlags.ContainerInherit, PropagationFlags.None, AccessControlType.Allow));

    myDirectoryInfo.SetAccessControl(myDirectorySecurity);
    MessageBox.Show("Permissions Altered Successfully" + User);
}

```

This code already successfully adds the User to the folder but the permissionIi set to that folder is not inherited at all. Did I miss something? Or could someone guide me how to inherit the permission to that folder?