Hi I have found a problem in Multilingual Asp.Net Web Application

I have Created a Global.asax file and write the code

private void Application_BeginRequest(Object source, EventArgs e)
{
    string[] languages = HttpContext.Current.Request.UserLanguages;

    if (languages[0].ToLower() != null && languages[0].ToLower()!="")
    {

        System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo(languages[0].ToLower());

        System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.CreateSpecificCulture(languages[0].ToLower());

    }
}

and define Label Like this

   <asp:Label ID="Labeldg" runat="server" Text="<%$ Resources:Resource, Labeldg %>"</asp:Label>

But it through Parser error like:

Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: The resource object with key 'LblUsrName_Login' was not found. Source Error:

</div>

<div class="impcLoginText_Login">

<asp:Label ID="LblUsrName" runat="server" Text="<%$ Resources:PageResource, LblUsrName_Login %>" "></asp:Label>