Client Side Web Development

Re: Reading from web.config

nitro-gl — Thu, 05 Nov 2009 14:58:08 GMT

Hi, I have the same problem.

I solve the problem.

It was because by default aspx page using VB, so I have only

<%@ Page Title="archive"%> in the top of aspx page ))

when i correct the page directive to

@ Page Title="archive" Language="C#"%>

my code

a class="textlink" href="<%= ConfigurationManager.AppSettings["NewsAdministration"]%>index.aspx"> Admin</a>
works fine for me.

I hope its help to somebody )) sorry for my english )

Re: Reading from web.config

asplikebutter — Fri, 13 Feb 2009 21:55:22 GMT

I need to do the same thing reading the value of a Key in web.config but to assing a expression to a validator

how can I do this in ASP

Re: Reading from web.config

Andreas Paulsson — Fri, 21 Nov 2008 11:15:44 GMT

Make sure that you have a reference to System.Configuration in your project.

Re: Reading from web.config

vaibhavgangal — Fri, 21 Nov 2008 10:37:13 GMT

Hi,

I have tried following code but gave error "Identifier expected".

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

Any idea what this error is?

Regards,

Vaibhav

Re: Reading from web.config

NHOQUE — Wed, 02 Apr 2008 09:06:56 GMT

You may try the following:

I tried it in my ASP.NET 2.0 and got the result.

var MyVar='<%= System.Configuration.ConfigurationManager.AppSettings["PathLogout"].ToString()%>'

Re: Reading from web.config

arunthomasarun — Fri, 14 Mar 2008 05:46:00 GMT

Try this

ClientScript.RegisterClientScriptBlock(this.GetType(), "maxAge", "<script language='javascript'>var maxAge='" + ConfigurationManager.AppSettings["test"].ToString() + "';</script>");

Thanks

Arun

Re: Reading from web.config

samerh — Thu, 28 Feb 2008 11:12:44 GMT

I need to read the value of the key in a javascript found in my master page.

i am writting this to read the PathLogout:

var t='<%=System.Configuration.ConfigurationManager.AppSettings("PathLogout").ToString() %>';

window.open(t);

when running my site it gives an error:

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

Re: Reading from web.config

JRICE — Thu, 28 Feb 2008 10:39:35 GMT

function test() { var t='' alert(t); }

Heres a sample on how you read appsettings from javascript

HTH

Re: Reading from web.config

samerh — Thu, 28 Feb 2008 09:54:51 GMT

iam using 2.0

i did try it but it didnt work. Are u sure that is is working?

used this

var MyVar = '<%$ System.Configuration.ConfigurationManager.AppSettings:PathLogout%>';

alert(MyVar.value);

Re: Reading from web.config

Andreas Paulsson — Thu, 28 Feb 2008 09:41:14 GMT

Are You using .NET 2.0 or later?

Use

alert ("test");
var MyVar = '<%$ System.Configuration.ConfigurationManager.AppSettings:PathLogout%>'; 
alert(MyVar.value);

instead.

Re: Reading from web.config

samerh — Thu, 28 Feb 2008 09:39:35 GMT

i have tried to add a hidden field and read the key from it

<asp:HiddenField ID="HiddenField1" runat="server" Value="<%$AppSettings:PathLogout %>" />

then in JS

var myVar = document.getElementById('<%= HiddenField1.ClientID %>').value;

but giving an error

The expression prefix 'System.Configuration.ConfigurationManager.AppSettings' was not recognized. Please correct the prefix or register the prefix in the <expressionBuilders> section of configuration.

please note that i have added

in namespaces in web.config and code behind of the page

Re: Reading from web.config

samerh — Thu, 28 Feb 2008 09:30:16 GMT

Iam using this in my javascript but still getting same error :(

alert ("test");
var MyVar = '<%$ System.Configuration.ConfigurationSettings.AppSettings:PathLogout%>';
alert(MyVar.value);

Re: Reading from web.config

Mulukutla — Thu, 28 Feb 2008 09:16:32 GMT

hey, try giving like this Configuration.ConfigurationManager.AppSettings:"KEY" in text binding.

i think this may work for u.

Regards,

Mulukutla

Re: Reading from web.config

samerh — Thu, 28 Feb 2008 09:07:50 GMT

Iam getting this error

Parser Error Message: Literal expressions like '<%$ AppSettings:PathLogout%>' are not allowed. Use <asp:Literal runat="server" Text="<%$ AppSettings:PathLogout%>" /> instead.

Re: Reading from web.config

Andreas Paulsson — Thu, 28 Feb 2008 08:58:28 GMT

When using expression builders in an aspx page, use the <%$ expression prefix: expression value %> syntax. See http://www.beansoftware.com/ASP.NET-Tutorials/Expression-Builder.aspx for more details.

So You should use

var MyVar = '<%$ AppSettings:PathLogout%>';

instead.