error:webform can not recognize defination of java script function

Discussion in 'JavaScript' started by coolsonu, May 23, 2007.

0
  1. #1
    Hi,
    I am using java script in asp.net 2.0. I have button on form . when i click button it shud execute java script (showAlert() function) . So I added
    Button1.Attributes.Add("onclick","showAlert()");

    <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="checkjs.WebForm1" %>
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
    <HTML>
    <HEAD>
    <title>WebForm1</title>
    <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
    <meta name="CODE_LANGUAGE" Content="C#">
    <meta name="vs_defaultClientScript" content="JavaScript">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
    <script type ="text/Jscript">
    function showAlert()
    {
    alert('ALERT ALERT!!');
    }
    </script>
    </HEAD>

    <body MS_POSITIONING="GridLayout">
    <form id="Form1" method="post" runat="server">
    <asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 144px; POSITION: absolute; TOP: 144px" runat="server"
    Text="Button" onclick="showAlert()"></asp:Button>
    </form>
    </body>
    </HTML>

    but I am getting this error
    webform does not contain a definition for 'showAlert'
     
    coolsonu, May 23, 2007 IP
  2. ajsa52

    ajsa52 Well-Known Member

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    #2
    I'm not sure, but maybe replacing <script type ="text/Jscript"> with
    <script language="javascript">

    Or maybe, replacing onclick="showAlert()" with onclick="javascript:showAlert()"
     
    ajsa52, May 23, 2007 IP
  3. coolsonu

    coolsonu Peon

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    #3
    I tried replacing onclick="showAlert()" with onclick="javascript:showAlert()"
    still same error
    Thanks for reply
     
    coolsonu, May 24, 2007 IP
  4. marty

    marty Peon

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    #4
    I am curious. I've never coded in .net b4 so please excuse my ignorance, but where does the showAlert() function exist? Is it in "checkjs.WebForm1"?
     
    marty, May 24, 2007 IP
  5. coolsonu

    coolsonu Peon

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    #5
    Hi actually I got solution I have to add my alert function in PageLoad method
    since I am working on asp.net 1.1 I am not allowed to use script in html file along with server control.

    private void Page_Load(object sender, System.EventArgs e)
    {
    Page.RegisterStartupScript("MyScript",
    "<script language=javascript>" +
    "function AlertHello() { alert('Hello ASP.NET'); }</script>");

    Button1.Attributes.Add("onclick","AlertHello()");
    }
     
    coolsonu, May 24, 2007 IP