passing javascript variable in app.settings (client side variable to server side)

Question

I want to read the config file in javascript that is the google key value. here what i am trying to do is passing a javascript variable"keyvalue" that is the keyname in config file but it does not work. i just want it so that the js function automatically picks up the google key according to site URL whether it may be test or dev or qa.abc.com can anyone help me what should i do to read the value form config file.

  <script type="text/javascript">

function ReadConfigSettings()
{ 

var url="test.abc.com"; //window.location.href

var patharray= new Array();

patharray =url.split('.');

var first = patharray[0];

 var keyvalue="GoogleKey_"+ first;

 var key='<%=ConfigurationManager.AppSettings[keyvalue]%>';

 alert(key);
}

 </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>

        <asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="ReadConfigSettings()" />

    </div>
    </form>
</body>

my config file

<appSettings>
    <add key="GoogleKey_dev" value="ABQIAAAAJ4psDZ8kCtN062-LDcwiXhQ85a215fgrIsfghh547457h1ETJRYlwaBGrrytgytg56g7Mx4QFQ"/>
    <add key="GoogleKey_qa" value="ABQIAAAACoUjxmFCsPtytryhtyty547547Ryt5gVV28BYSHIaU0BRwPyLrf_gf546Jd_5qxcNZ-_b7WZw"/>
    <add key="GoogleKey_test" value="AIzaSyvbghgfyh54654650x2SlGb33KrTtIBc"/>

thanks for your answer but i want to pass a js variable in ConfigurationManager.AppSettings["Setting"] so simply i want is ConfigurationManager.AppSettings["my js variable"] and my js variable holds my key name. — sanidhya
– sanidhya, Commented Aug 28, 2012 at 4:30

Nikhil D · Accepted Answer · 2012-08-28 12:49:40Z

1

Web.Config

</configuration>
    <appSettings>
        <add key="Setting" value="Value"/>
    <appSettings>
</configuration>

In Aspx page take

<asp:HiddenField runat='server' id='hidkey' />

In javascript

 document.getElementById('<%=hidkey.ClientID %>').value = '<%=System.Configuration.ConfigurationManager.AppSettings["Setting"] %>';

Now access in C#

  string key=hidkey.value;//Here u get web.config [Setting] value

edited Aug 28, 2012 at 12:49

answered Aug 27, 2012 at 12:13

Nikhil D

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4 Comments

sanidhya Over a year ago

thanks for your answer but i want to pass a js variable in ConfigurationManager.AppSettings["Setting"] so simply i want is ConfigurationManager.AppSettings["my js variable"] and my js variable holds my key name.

Nikhil D Over a year ago

not possible...because AppSettings["Setting"] extract from web.config file.

sanidhya Over a year ago

yes as you can see above in js i wrote var keyvalue="GoogleKey_"+ first; so i want to pass this variable in AppSettings[] so that it automatically picks up the value from webconfig as per the parameter such as GoogleKey_test or GoogleKey_dev etc

Nikhil D Over a year ago

then take it in hiddenfield and acess on code behind(server side) its simple

Rab Khan · Accepted Answer · 2012-08-27 12:14:50Z

0

You Can't Mix server side with client side, like this. you need to use AJAX for this kind of functionality

answered Aug 27, 2012 at 12:14

Rab Khan

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