How can I change the CurrentCulture of the entire process (not just current thread) in .Net?

I have a situation where I need to set my process' locale to en-US.

I know how to do this for the current thread:

System.Threading.Thread.CurrentThread.CurrentCulture = 
     System.Globalization.CultureInfo.CreateSpecificCulture("en-US");

But my application uses BackgroundWorkers to do some processing, and the locale for these worker threads seems not to be affected by the above change to their spawning main-thread.

So how can I set the locale for all the threads in my application without setting it in each one manually?

Solution

You'll have to change the operating system locale if you want to do that. For what reason do you want BackgroundWorkers to run in en-US?

You should have your business layer running in an invariant culture, and only have a specific culture for the end user's UI.

If you are using the BackgroundWorker component, and have to do this you could try something like this in the DoWork method:

// In DoWork
System.Globalization.CultureInfo before = System.Threading.Thread.CurrentThread.CurrentCulture;
try

{
    System.Threading.Thread.CurrentThread.CurrentCulture = 
        new System.Globalization.CultureInfo("en-US");
 // Proceed with specific code
}

finally
{
    System.Threading.Thread.CurrentThread.CurrentUICulture = before;
}