Set the culture of the program. It won't affect the user settings
// C#
// Put the using statements at the beginning of the code module
using System.Threading;
using System.Globalization;
// Put the following code before InitializeComponent()
// Sets the culture to English(United States)
Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
// Sets the UI culture to French (France)
Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-US");
For more information:
http://msdn.microsoft.com/en-us/library/b28bx3bh(v=vs.80).aspx[
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Please don't forget to mark this answer as a solution if it works :)