CODEWITHSUNDEEP
javascriptasp.netweb-configkey-value
Aless Hosry
Aless Hosry

Reputation: 1189

Identifier expected error javascript in aspx page while reading key value from web.config

I am trying to read key value from web.config using javascript in my .aspx page. This page is included in a master page, the script block is added in the ContentPlaceHolder tag in my aspx page as below; This question was asked before here how to read values from web.config in javascript in aspx page but there was no clear solution. Someone suggested returning to server side but I am trying to avoid returning to server in order to accelerate user's work on the page ... So below is my code:

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <script type="text/javascript">

    function CheckCountry() {
        var country = '<%= System.Configuration.ConfigurationManager.AppSettings["LoginCountry"].ToString() %>';
        alert(country);
    }

    window.onload = CheckCountry; 

    </script>
       ....
</asp:Content>

But whenever I try to run my project I get this error in the List Error box in visual Studio 2010. I have tried also this '<%=ConfigurationManager.AppSettings["LoginCountry"].ToString() %>' but didn't work, same error was thrown ... What could be the problem? How can I solve this and get the value of country from web.config in my aspx page?

Upvotes: 0

Views: 897

Answers (1)

VDWWD
VDWWD

Reputation: 35544

It would seem the Visual Studo 2010 editor gets confused about the combination of ' and the inline code <%= ... %>. Because in Studio 2015 the following line does work:

var country = '<%= System.Configuration.ConfigurationManager.AppSettings["LoginCountry"].ToString() %>';

What you could try is to create the entire line with javascript in code, maybe then the editor is not confused.

<%= "var country2 = '" + System.Configuration.ConfigurationManager.AppSettings["LoginCountry"].ToString() + "';" %>

Or in code behind:

public string javaScript;
protected void Page_Load(object sender, EventArgs e)
{
    javaScript = "var country = '" + ConfigurationManager.AppSettings["LoginCountry"].ToString() + "';";
}

and then on the aspx page

function CheckCountry() {
    <%= javaScript %>
    .... etc
}

Upvotes: 1

Related Questions