How to read Windows Registry Values for specific path using C# .Net

 public string Read(string KeyName)
        {
            RegistryKey oldkey = Registry.CurrentUser.OpenSubKey(@"HKEY_CURRENT_USER\Example"); 
            if (oldkey == null)
            {
                return null;
            }
            else
            {
                try
                {
                    return txtkey.Text = oldkey.GetValue("Name").ToString();
                }
                catch (Exception ex)
                {
                    throw new Exception(ex.Message);
                   
                }
            }
        }