Calling user control JavaScript function from consuming applications JavaScript

Question

I have a Web user control named UserControl.ascx and a JavaScript function 'GetValues()' to return some value is embedded in that ascx page. I've compiled the ascx page into a dll and used that in another web application.But now the problem is when I tried to call the user control JavaScript function from web application, JS Debugger showing 'GetValues' is undefined error. Is there any way solve this issue ?

in ASCX File:

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ICEImage.ascx.cs" Inherits="ICEImage" %>
   <div>                 
         <asp:TextBox ID="txtValue" runat="server" BackColor="#FFFFC0" ReadOnly="True" Width="150px" 
   </div>
<script type="text/javascript">
function GetValue()
{
  return parseInt(document.getElementById('<%=txtValue.ClientID%>').value);
}
</script>

ASPX File:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register TagPrefix="ASP" Assembly="App_Web_iceimage.ascx.cdcab7d2" Namespace="ASP" %>

<!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>Sample Page</title>
</head>
<body style="background-color: #383838">
    <form id="form1" runat="server">
    <ASP:iceimage_ascx ID="ICEImage1" runat="server"></ASP:iceimage_ascx>  
    <button id="btnSave" style="width: 85px; height: 29px" type="button" onclick="GetValue()">Save</button>          
    </form>
</body>  
</html>

Boriss Pavlovs · Accepted Answer · 2012-12-11 11:52:41Z

0

You can define your function from server code like this and add this on Page_PreRender for example

if (!Page.ClientScript.IsClientScriptBlockRegistered("FunctionGetValue"))
        {
            string script = @"function GetValue() {
                   return parseInt(document.getElementById('"+txtValue.ClientID+"').value);
                   }";
            ScriptManager.RegisterClientScriptBlock(this.Page, this.Page.GetType(), "FunctionGetValue", script, true);

        }

edited Dec 11, 2012 at 11:52

answered Dec 11, 2012 at 10:37

Boriss Pavlovs

1,44112 silver badges8 bronze badges

No,I need to call the function from web applications JavaScript block. Is it possible ?

Senan
– Senan

12/11/2012 10:46:21
Commented Dec 11, 2012 at 10:46
Could you post a little bit more of your code? And how do you include your control in web page (Register derective from aspx or LoadControl from code)?

Boriss Pavlovs
– Boriss Pavlovs

12/11/2012 10:54:56
Commented Dec 11, 2012 at 10:54
Using Register Directive. %@ Register TagPrefix="ASP" Assembly="App_Web_iceimage.ascx.cdcab7d2" Namespace="ASP" %>

Senan
– Senan

12/11/2012 10:57:05
Commented Dec 11, 2012 at 10:57
But my example how to declare function in ascx control. You can call this function from your web application and it return value, because it will be present on page.

Boriss Pavlovs
– Boriss Pavlovs

12/11/2012 11:06:52
Commented Dec 11, 2012 at 11:06
What the reason to use script block from ascx?

Boriss Pavlovs
– Boriss Pavlovs

12/11/2012 11:27:29
Commented Dec 11, 2012 at 11:27

| Show 1 more comment

Collectives™ on Stack Overflow

Calling user control JavaScript function from consuming applications JavaScript

1 Answer 1

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Your Answer

Sign up or log in

Post as a guest

Related