new_gist_file

using Microsoft.Win32;
...
 
RegistryKey masterKey = Registry.LocalMachine.CreateSubKey
   ("SOFTWARE\\Test\\Preferences");
if (masterKey == null)
{
   Console.WriteLine ("Null Masterkey!");
}
else
{
   try
   {
      masterKey.SetValue ("MyKey", "MyValue");
   }
   catch (Exception ex)
   {
      Console.WriteLine (ex.Message);
   }
   finally
   { 
      masterKey.Close();
   }
}


public string Read(string KeyName)
{
    // Opening the registry key
      RegistryKey rk = baseRegistryKey ;
    // Open a subKey as read-only

    RegistryKey sk1 = rk.OpenSubKey(subKey);
    // If the RegistrySubKey doesn't exist -> (null)

    if ( sk1 == null )
    {
        return null;
    }
    else
    {
        try 
        {
       // If the RegistryKey exists I get its value or null is returned.        
         return (string)sk1.GetValue(KeyName.ToUpper());
        }
        catch (Exception e)
        {
            ShowErrorMessage(e, "Reading registry " + KeyName.ToUpper());
            return null;
        }
    }
}