Get C# variable from codebehind into javascript variable on aspx page

Question

5.00/5 (1 vote)

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Hi, i am beginner at c# and asp.net. I have a public decimal variable on in my code behind. How do iget this variable and use it in a if statement with javascript on my aspx page?...Any help will be much appreciated.

Posted 6-Jul-12 4:17am

Ruwaldo

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4 solutions

Solution 2

C#

public decimal Price;

then you can access that from Javascript as

C#

var price = <%=this.Price%>;

Posted 6-Jul-12 4:26am

DamithSL

Updated 6-Jul-12 4:35am

v3

Comments

Ruwaldo 6-Jul-12 10:27am

tried this already get an error.

DamithSL 6-Jul-12 10:36am

What is the error?

Manas Bhardwaj 6-Jul-12 10:27am

ditto +5!

DamithSL 6-Jul-12 10:38am

:) There is no auto refresh or alert system when someone else added answer. Sorry yes it is ditto......... 5+ from me

Manas Bhardwaj 6-Jul-12 10:41am

Nothing to be sorry about. Infact, you posted 1 min before me.
Need to work on my typing skills ;)

Ruwaldo 9-Jul-12 4:24am

It says expression expected.

Solution 3

public int i;
i=10;
//do some code....

on view page....
write with in jquery function or any event
var price = <%=this.i%>;

Posted 6-Jul-12 20:14pm

rizwan muhammed khan gouri

Comments

Sandeep Mewara 7-Jul-12 5:44am

Why are you simply doing almost a copy-paste of same answer posted before? Avoid it.

Ganesh Vellanki 13-Nov-14 5:40am

why says syntax not identified...?

Solution 4

VB

if possible (is available) try to assign value in java to document.cookie = javavalue and then get it from codebehind var x= document.cookie (either via webbrowser or page)

Posted 7-Feb-14 10:05am

stsalt

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Manas Bhardwaj · Accepted Answer · 2012-07-06T04:25:00

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);
}