cheecked change event not loading

ystm · Nov 28, 2006

Whne adding a confirmation box to the checkbox (when its value changed from checked to unchecked), the checked change event will not load.

Any suggestions?

Code:

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "[URL unfurl="true"]http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">[/URL]

<script runat="server">

    protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
    {
        if (CheckBox1.Checked == false)
        {
            Response.Write("Checkbox changed value");
        }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        CheckBox1.Attributes.Add("onclick", "if (!this.checked) {return confirm('Please confirm'); }");
    }
</script>

<html xmlns="[URL unfurl="true"]http://www.w3.org/1999/xhtml"[/URL] >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:CheckBox ID="CheckBox1" runat="server" OnCheckedChanged="CheckBox1_CheckedChanged" AutoPostBack=true />
    </div>
    </form>
</body>
</html>

link9 · Nov 29, 2006

The function has a logic error in it. If you were compiling this in C#, the error would be "Not all code paths return a value.".

Try this:

Code:

....
    protected void Page_Load(object sender, EventArgs e)
    {
        CheckBox1.Attributes.Add("onclick", "OnCheckedChanged(this);");
    }
</script>
<script language="javascript">
  function OnCheckedChanged(p_Obj)
  {
	var output = false;
	if(!p_Obj.checked)
	{
		output = confirm('Please confirm');
	}//if
	return output;
  }//OnCheckedChanged
</script>
....

-paul

The answer to getting answered -- faq855-2992

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

cheecked change event not loading

ystm

Programmer

link9

Programmer

Similar threads

Part and Inventory Search

Sponsor