ASP.NET

Protected Sub cmdOk_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdOk.Click
       Dim str As String = ""
       str = ConcatAirCode()
       cmdOk.OnClientClick = "Done('" & str & "','" & strTextId & "')"

   End Sub

protected override void InitializeCulture()
{
    string culture = Request.Form["DropDownList1"];
    if (culture==null)
    {
        culture = "en-US";
    }

    Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(culture);
    Thread.CurrentThread.CurrentUICulture = new CultureInfo(culture);

    base.InitializeCulture();
}

protected override void InitializeCulture()
{
    string culture = Request.Form["DropDownList1"];
    if (culture==null)
    {
        culture = "en-US";
    }

    UICulture = culture;
    Culture = culture;

    base.InitializeCulture();
}