OnSelectedIndexChanged on DDL not working? IE6.0.2 bug?

Discussion in 'ASP .Net' started by Groove, May 17, 2006.

  1. Groove

    Groove Guest

    I have a strange problem. It seems that for some reason, a
    OnSelectedIndexChanged event is no producing an error in IE6. What concerns
    me is that I just performed that large Windows update a couple of weeks ago
    and it updated ActiveX "stuff" in IE. I'm not sure if the update has
    effected IE or there's something wrong with mt .net application.

    I have a simple DDL. It calls a sub when the value in the DDL is changed.
    Now, when I change the value, IE displays the js error msg box and says:

    'event' is null or not an object.Line X, character X.

    It gets weird. It refers to a place in my code that makes no sense. There's
    no javascript or anything .net generated on line X. Furthermore, I deleted
    massive amounts of makr up code as a test. I wanted to see if the reference
    to line x changed. I refreshed and tested the page. Same error even though
    a 100+ lines of code are now gone (html), it still references to the same
    place in my code! The page works fine as it always did in Firefox 1.5.

    My simple code:

    <asp:DropDownList ID="ddlCapitalItems" runat="server" BackColor="#FFFFFF"
    Font-Names="Verdana,Arial" Font-Size="8pt" AutoPostBack="True"
    OnSelectedIndexChanged="ddlCapitalItems_SelectedIndexChange" />





    Protected Sub ddlCapitalItems_SelectedIndexChange(ByVal Sender As Object,
    ByVal E As EventArgs)

    '------------------------------------------------------------------------------------

    '- This sub routine is called when the Capital Items Drop Down List is
    changed. -

    '- If checks to see if the user selected "Other" and if so, it will enable
    the -

    '- the txtOtherDesc control and related validation controls. -

    '------------------------------------------------------------------------------------



    If ddlCapitalItems.SelectedValue = 1 Then

    txtOtherDesc.Enabled = True

    txtOtherDesc.Text = ""

    OtherDescRequired.Enabled = True

    Else

    txtOtherDesc.Enabled = False

    txtOtherDesc.Text = "Not Required"

    OtherDescRequired.Enabled = False

    End If



    End Sub
     
    Groove, May 17, 2006
    #1
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  2. Groove

    Groove Guest

    to add additional info. I tested my page on someone else's PC with IE6 and
    it fails there too. Make me think it is not the Windows update but rather
    my application. I whipped up a quick test page like below and it works
    fine.

    Any ideas?? Thanks!




    <%@ Page Language="VB" %>

    <script runat="server">

    Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object,
    ByVal e As System.EventArgs)

    Label1.Text = DropDownList1.SelectedValue

    End Sub

    </script>

    <html xmlns="http://www.w3.org/1999/xhtml" >

    <head runat="server">

    <title>Untitled Page</title>

    </head>

    <body>

    <form runat="server">

    &nbsp;<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label><br />

    <br />

    <br />

    <asp:DropDownList ID="DropDownList1" runat="server"
    OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"
    AutoPostBack="true">

    <asp:ListItem>Red</asp:ListItem>

    <asp:ListItem>Blue</asp:ListItem>

    </asp:DropDownList>

    </form>

    </body>

    </html>
     
    Groove, May 17, 2006
    #2
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