troubleshooting Question

Listbox with item added via javascript loses its value.

Avatar of jazz__man
jazz__man asked on
JavaScript.NET ProgrammingASP.NET
3 Comments1 Solution325 ViewsLast Modified:

I have the following code ...
<script language="javascript" type="text/javascript">
    function openbrWindow() {
        var RetVal = window.showModalDialog("Popup/popupFrame.aspx?qs=../Pickers/TestForm.aspx",
        'dialogHeight=300px;dialogWidth=700px,toolbar=no,unadorned=yes,directories=no,status=no,menubar=no,scrollbars=no,resizable=no ,modal=yes',

        var LstItems = document.getElementById("<%= lstItems.ClientID %>");

        var opt = LstItems.options;
        opt[opt.length] = new Option(RetVal, 1);

<asp:ListBox ID="lstItems" Width="400px" Height="37px" runat="server"></asp:ListBox>
<asp:Button ID="btnPick" runat="server" Width="40px" Height="40px" Text="" />

The code above adds an item to a listbox but then in a split second the text disappears from the listbox. How can I get the text to stay in the listbox? Or why is this happening? Your help would be appreciated.

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