How does Request["Language1"] work from inside the content place holder. I am having trouble getting this code to run.

I have a page that I have created from a masterpage. This page contains a content placeholder. Inside the content place holder is my dropdownlist "Language1". When InitializeCulture() is overwritten I do not see the collection being written to the string. the language variable is always null hence the languages being selected are not getting written to.

   protected override void InitializeCulture()

   {

       string language = Request["LanguageSelector"];

       if (language != null && language != "")

       {

           Thread.CurrentThread.CurrentUICulture = new CultureInfo(language);

           Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(language);

       }

   }

ASPX Code content file is as below: 

<asp:Content ID="Content3" runat="server" ContentPlaceHolderID="ContentPlaceHolderLanguageSelector">

   <asp:DropDownList ID="LanguageSelector" runat="server" AutoPostBack="true" OnSelectedIndexChanged="LanguageSelector_SelectedIndexChang ed">

       <asp:ListItem Value="auto">Auto</asp:ListItem>

       <asp:ListItem Value="fr">French</asp:ListItem>

       <asp:ListItem Value="en-US">English (US)</asp:ListItem>

       <asp:ListItem Value="en-GB">English (UK)</asp:ListItem>

   </asp:DropDownList>

</asp:Content>

the problem is :InitializeCulture will be called in an early stages !

please read how they solve this issue using the session  :

here :http://www.c-sharpcorner.com/UploadFile/munnamax/Localization03172007031927AM/Localization.aspx

 Thank you for replying..

Based on your code below:

protected override void InitializeCulture()
{
    //string culture = Request.Form["ddSelLanguage"];
    string culture = Session["Language"].ToString();
    if (string.IsNullOrEmpty(culture))
        culture = "Auto";
    //Use this
    UICulture = culture;
    Culture = culture;
    //OR This
    if (culture != "Auto")
    {
        System.Globalization.CultureInfo MyCltr = new System.Globalization.CultureInfo(culture);
        System.Threading.Thread.CurrentThread.CurrentCulture = MyCltr;
        System.Threading.Thread.CurrentThread.CurrentUICulture = MyCltr;
    }
    base.InitializeCulture();
} 

Code:

In "Default.aspx" file I have a drop-down by which user can select specific language, i have Arabic and English languages and by default "Auto" is set. I have used Auto-postback property of the drop-down & even you can make use of submit button for the same.

Once you got the selected language you can hold that value in the session as explained in the above code.

Session["Language"] = Request.Form["ddSelLanguage"];

While overriding the InitializeCulture() method you can assign this to the culture variable.

the Session["Language"] when I set this in the InitializeCulture as you have show above, it gives me an error as Object Reference not set to an instance of an object error... 

ok

lets go back to your solution , please change your code to this :

        protected override void InitializeCulture()
        {

            string language = Request[LanguageSelector.UniqueId];

            if (language != null && language != "")
            {

                Thread.CurrentThread.CurrentUICulture = new CultureInfo(language);

                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(language);

            }

        }

in selectedindexChanged of the dropDownlist  , add this code :

Here is the error after adding the above

Object reference not set to an instance of an object.

Line 38:     {
Line 39: 
Line 40:         string language = Request[LanguageSelector.UniqueID]; 
Line 41:         if (language != null && language != "") 
Line 42:         { 

sorry,

 use this

string language = Request.Form[LanguageSelector.UniqueId];

 I tried that since I thought that might be the issue, but that gives me the same problem. Unless it is expecting me to use that LanguageSelector.UniqueID in quotation.

 running this in the debug mode i find that the LanguageSelector DDL is always a null. not sure why that is.

 from my initializeculture()

language = Request.Form[LanguageSelector.UniqueID];

here the language is also a null hence the new culture is never set based on the if condition placed.

why would the LanguageSelector DDL  be a null, is it because it is inside a ContentPlaceHolder on this page?

<asp:Content ID="Content3" runat="server" ContentPlaceHolderID="ContentPlaceHolderLanguageSelector">

    <asp:DropDownList ID="LanguageSelector" runat="server" AutoPostBack="true" OnSelectedIndexChanged="LanguageSelector_SelectedIndexChanged">
        <asp:ListItem Value="auto">Auto</asp:ListItem>
        <asp:ListItem Value="fr">French</asp:ListItem>
        <asp:ListItem Value="en-US">English (US)</asp:ListItem>
        <asp:ListItem Value="en-GB">English (UK)</asp:ListItem>
    </asp:DropDownList>

</asp:Content>
 

I have pulled all my hair out of my head..this works on a simple page, but on this page derived from the masterpage template the same code is useless..hmm

yes the problem is that its inside a content place holder ,

to know what is the key that we need to use it for Request.Form(

you need to add a break point at InitilizeCulture and watch the values of Request.Form.AllKeys

its an array of all keys in the form , try to find the key the ends with the ID of your dropdownlist ,

 then copy it and in your code , pass that key to Request.Form(" key that found ")

I did exactly as suggested, inside my Request.Form.AllKeys I have a value of {string[0]} and that is all.

what about this :

language = Request.Form["ctl00$ContentPlaceHolderLanguageSelector$LanguageSelector"];

Note: you must postback the form to have that value ! it wil not be available for the first page Load !

can you tell me where did you placed LanguageSelector ? and from where you are trying to access it ?

 LanguageSelector sits inside a content holder on default.aspx page. I have a label on this page on a separate contentholder on the same default.aspx page.

The Code behind the default.aspx page is trying to access the LanguageSelector as we have been trying to succesfully get the language selected items into the local string language variable. The LanguageSelector is doing the AutoPostBack = True.

What do you mean by the form has to do the postback? Where do I handle tis one.

AnshumanT:

What do you mean by the form has to do the postback? Where do I handle tis one.

I mean the Request.Form will not contains any value in the first time the page is loaded !

it contains the values when you change the DropDownList selection ( or press a button  ) !

But it seems that its not the problem !

Please in the Defautl.aspx page , you must remove any content that refers to the Master page content that holds the DropDownlist :

what i mean is :

assume you have this in your master :

                  <asp:ContentPlaceHolder ID="ContentPlaceHolderLanguageSelector" runat="server">
                    <asp:DropDownList ID="LanguageSelector" runat="server">
                       .....
                    </asp:DropDownList>
                  </asp:ContentPlaceHolder>

Now :in  content page (defautl.aspx) , if you have any content control(asp:Content )  that referes to the  above "ContentPlaceHolderLanguageSelector" ContentPlaceHolder ,

some thing like this :

<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="ContentPlaceHolderLanguageSelector">
</asp:Content>

then , you will get nothing for the Language dropDownlist in the Request.Form.. keys , 

so please remove any content that referece to the master page content Placeholder where you placed the DropDwonlist !

Hi

Lets try  this solution :

        protected override void InitializeCulture()
        {
            DropDownList ddl = Master.FindControl("ContentPlaceHolderLanguageSelector").FindControl("LanguageSelector") as DropDownList;
            string lang = ddl.SelectedValue;
            if (!string.IsNullOrEmpty(lang))
            {
                Thread.CurrentThread.CurrentUICulture = new CultureInfo(lang);
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(lang);
            }
          
            base.InitializeCulture();

        }

And in LanguageSelector SelectedIndexChanged :

        protected void LanguageSelector_SelectedIndexChanged(object sender, EventArgs e)
        {
            // issue extra redirect to apply latest language
            Response.Redirect(Request.RawUrl);
        }

Regards,

I finally was able to figure it out.

If you are using a masterpage template then you got to STRONGLY TYPE the control from the masterpage. To do this you have to have the directive..

<%@ MasterType virtualpath="~/Masters/Master1.master" %> on your *.aspx pages. this will then allow you to locate the control on your master page

and then the this value was set.

I finally got the code to work, but not by overide initializeculture is what i figured out, i set the threads and the culture on the page load.

so this portion worked for me... 

 check this website this might help clear up some problems on the initialize culture.

http://msdn2.microsoft.com/en-us/library/xxwa0ff0.aspx