change the default language for windows xp by c# code

Hello
It's solved.
Tanks.

private InputLanguage GetFarsiLanguage()
{

foreach (InputLanguage lang in InputLanguage.InstalledInputLanguages)
if (lang.Culture.EnglishName.ToLower().Contains("iran"))
return lang;

return null;

}

public void YourMethod()
{
if (InputLanguage.CurrentInputLanguage == GetFarsiLanguage())
MessageBox.Show("System Language is farsi...");

else
{
InputLanguage lang = GetFarsiLanguage();
if (lang == null)
throw new NotSupportedException("Farsi Language keyboard is not installed.");

InputLanguage.CurrentInputLanguage = lang;
MessageBox.Show("System Language changed to farsi.");
}

http://www.barnamenevis.org/forum/showthread.php?mode=hybrid&t=233846[^]