高分急求：如何控制当前输入法的切换

//关闭中文输入法，简单有效：
public void disableIME()
{
    formTest.ImeMode = System.Windows.Forms.ImeMode.Off;
}
//在安装有美国英语的场合：
public void disableIME()
{
    System.Globalization.CultureInfo cultureInformation = new
                  System.Globalization.CultureInfo("en-US", true);
    InputLanguage.CurrentInputLanguage = InputLanguage.FromCulture
                  (cultureInformation);
}