Multi Lingual C# application - Issue on getting Chinese Lang

Question

Hi

I am developing a c# Winforms application using VS 2008 and DevExpress.

In one form, I need the some data to be added both in English and Chinese Language. So I placed separate textboxes for both Chinese and English and two buttons on form. one Button click shows Chinese language section and changes Inputlanguage . Second button hides Chinese language section, Changes InputLanguage .

When I run the application, First time when I change to Chinese Language, I am getting Chinese language selection option on typing English letter combination. But after returning to English, if I again go to Chinese data entry, I am not getting Chinese Language support on typing English.

But I am seeing the Language change on Taskbar.

Language Change Code

1st method

 

 foreach (InputLanguage lang in InputLanguage.InstalledInputLanguages) 
{
 CName = lang.Culture.EnglishName.ToString(); 
 if (CName.StartsWith("Chinese")) //"English" 
   { 
      InputLanguage.CurrentInputLanguage = lang; 
      break; 
   }
 }

2nd Method
Thread.CurrentThread.CurrentCulture = new CultureInfo("zh-CN"); 
Thread.CurrentThread.CurrentUICulture = new CultureInfo("zh-CN");

I tried this with normal windows forms  project and controls( Not Devexpress form) still the issue not solved. 
If we change input language manually at Taskbar, I am getting Language  selection option. The Issue is only 
with language  change from code.
 Please give me a immediate advice 
Thanks 
Johnson