change language dynamically problem:String reference not set to an instance of a String RSS

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  keyvan1

  Member

  86 Points

  272 Posts

  change language dynamically problem:String reference not set to an instance of a String

  Jan 22, 2013 02:51 PM|LINK

  I have the following code in my  basepage

  it get the language from my config file and set the culture for the language it worked pefect when i used dropdownlist but now that i have changed the code to get the it from database i get the error:

  String reference not set to an instance of a String

  on line:

   Dim ci As New System.Globalization.CultureInfo(language.Value)
  
  it happens if the cookie is empty for the first time and it does not apply the Response.Redirect(Request.ServerVariables("SCRIPT_NAME"))
  here is my code
  
  
    Protected Overloads Overrides Sub InitializeCulture()
  
          '  If config.Language IsNot Nothing Then
          '    Dim controlID As String = Request(PostBackEventTarget)
  
          '  If controlID.Equals(LanguageDropDownID) Then
          '  Dim selectedValue As String = Request.Form(Request(PostBackEventTarget)).ToString()
          Dim selectedValue As String = config.Language
          If Not selectedValue Is Nothing Then
              Select Case selectedValue
                  Case "en"
                      SetCulture("en-US", "en-US")
                      Exit Select
                  Case "de"
                      SetCulture("de-DE", "de-DE")
                      Exit Select
                  Case "fr"
                      SetCulture("fr-FR", "fr-FR")
                      Exit Select
                  Case "es"
                      SetCulture("es-ES", "es-ES")
                      Exit Select
                  Case "it"
                      SetCulture("it-IT", "it-IT")
                      Exit Select
                  Case "ar"
                      SetCulture("ar-AR", "ar-AR")
                      Exit Select
                  Case "ir"
                      SetCulture("fa-IR", "fa-IR")
                      Exit Select
                  Case "cn"
                      SetCulture("cn-CN", "cn-CN")
                      Exit Select
                  Case "jp"
                      SetCulture("jp-JP", "jp-JP")
                      Exit Select
                  Case "kr"
                      SetCulture("kr-KR", "kr-KR")
                      Exit Select
                  Case "ru"
                      SetCulture("ru-RU", "ru-RU")
                      Exit Select
                  Case Else
                      ' SetCulture("en-US", "en-US")
                      Exit Select
              End Select
  
          End If
  
  
  
          Dim language As HttpCookie = Request.Cookies("AutoLangCookie")
          Dim language2 As HttpCookie = Request.Cookies("AutoLangCookie2")
  
  
          If language IsNot Nothing AndAlso language2 IsNot Nothing Then
              Dim ci As New System.Globalization.CultureInfo(language.Value)
              Dim ci2 As New System.Globalization.CultureInfo(language2.Value)
  
              Thread.CurrentThread.CurrentUICulture = DirectCast(ci, CultureInfo)
              Thread.CurrentThread.CurrentCulture = DirectCast(ci2, CultureInfo)
          End If
  
          MyBase.InitializeCulture()
  
  
  
          'End If
      End Sub
  
    Protected Sub SetCulture(ByVal name As String, ByVal locale As String)
          Thread.CurrentThread.CurrentUICulture = New CultureInfo(name)
          Thread.CurrentThread.CurrentCulture = New CultureInfo(locale)
  
  
          Response.Cookies.Remove("AutoLangCookie")
          Response.Cookies("AutoLangCookie").Expires = DateTime.Now.AddDays(-1)
          Dim language As HttpCookie = New HttpCookie("AutoLangCookie")
          language.Value = Thread.CurrentThread.CurrentUICulture.ToString
          language.Expires = DateTime.MaxValue
          Response.Cookies.Add(language)
  
  
          Response.Cookies.Remove("AutoLangCookie2")
          Response.Cookies("AutoLangCookie2").Expires = DateTime.Now.AddDays(-1)
          Dim language2 As HttpCookie = New HttpCookie("AutoLangCookie2")
          language2.Value = Thread.CurrentThread.CurrentCulture.ToString
          language2.Expires = DateTime.MaxValue
          Response.Cookies.Add(language2)
  
          ' Response.Redirect(Request.ServerVariables("SCRIPT_NAME"))
  
      End Sub

• • Reply
  

  Catherine Sh...

  All-Star

  23382 Points

  2490 Posts

  Microsoft

  Re: change language dynamically problem:String reference not set to an instance of a String

  Jan 25, 2013 07:34 AM|LINK

  Hi,

  keyvan1

  String reference not set to an instance of a String

  According to the description above, it seems like that when language.Value is null. In order to resolve it, please check it at first and make sure it is not null before transfer. And check the similar thread:

  http://forums.asp.net/t/1240035.aspx/1

  Best wishes,

  Please mark the replies as answers if they help or unmark if not.
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  • Marked as answer by Catherine Shan - MSFT on Jan 29, 2013 08:18 AM