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How do I move a JavaScript Variable to an asp.net code behind Variable (C#)

Posted on 2009-04-05
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Last Modified: 2012-05-06
I have a java function that returns a value, in a var named Rm  I want to move that value to a ASP.NET variable named netRm.  Can someone show me how to do this.  Im using C#  in my code behind page.

Below is my code:


Aspx:
 
<label for="x1">x1:</label>
<script> var Rm = x1;</script>
<asp:Label ID=" Lblx1" runat="server" Text="Label"></asp:Label>
 
 
CodeBH:
 
String netRm;
Lblx1.text = netRm;

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Question by:bmanmike39
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3 Comments
 
LVL 13

Accepted Solution

by:
sm394 earned 500 total points
ID: 24072885
one alternative could be the use of hidden field
i.e

ASPX
 
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="TestPro.WebForm1" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
 
    <script type="text/javascript">
        function Test() {
 
            var i = "aaa";
            document.getElementById('<%=hdnField.ClientID%>').value = i;
        }
    </script>
 
</head>
<body >
    <form id="form1" runat="server">
    <div>
   
        <asp:HiddenField runat="server" ID="hdnField" />
        <asp:Button runat="server" ID="btnTest" Text="GetVal" onclick="btnTest_Click"  OnClientClick="Test();" />
    </div>
    </form>
</body>
</html>
 
 
 
Code Behind
 
   protected void btnTest_Click(object sender, EventArgs e)
        {
            Response.Write(hdnField.Value);
        }

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LVL 13

Expert Comment

by:sm394
ID: 24072934
once you have value in hidden field you can assign to your variable

public string Name;

        protected void btnTest_Click(object sender, EventArgs e)
        {
            Response.Write(hdnField.Value);
            Name = hdnField.Value;
        }

or in aspx

  <%=Name %>
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Author Closing Comment

by:bmanmike39
ID: 31566807
Thanks!!!
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