How to change javascript value from aspx.cs

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Below code is my aspx page...from aspx.cs page i have to change value of roomid using label or text.

JavaScript

<script type="text/javascript">
var targetID = "scribblar";
var flashvars = {};
/* pass necessary variables to the SWF */
flashvars.userid="0"; 							 flashvars.roomid = "uh2b9pm";
flashvars.username = "saju25";

This is the aspx code

C#

flashvars.roomid ="uh2b9pm"

i have to change roomid="some other value" from aspx.cs page using textbox...

Please tell me how to solve.......

Posted 13-Jul-12 0:51am

ANOOP CL NAIR

Updated 13-Jul-12 0:52am

Manas Bhardwaj

v2

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Manas Bhardwaj · Answer 1 · 2012-07-13T00:55:00

Well there is one shortcut we used to use during the ASP days, this still works in ASP.NET
In the page codebehind declare a public property say public int MyInteger
In the aspx put this

XML

<script>
    function GetMyValue()
    {
     var someVar = <%=this.MyInteger%>;
     //Do something
    }
</script>

To do it nicely, you can use RegisterClientScriptBlock[^]

C#

string script = string.Format("var myVariable = '{0}';", vaiable.ToString());
if (!ClientScript.IsClientScriptBlockRegistered("myScript"))
{
    ClientScript.RegisterClientScriptBlock(typeof(_Default), "myScript", script, true);
}