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POListbox Javascript Multtiselect not working after upgrade to .Net 3.5
 

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  1. POListbox Javascript Multtiselect not working after upgrade to .Net 3.5
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    <p>I have an application which is in .Net1.1 and upgraded to 3.5 using Visual studio 2008. </p> <p>There is page which is having a checkbox and a list box which is enabled and disabled using Javascript if enabled we can select the items in List and upon button click the selected items will be processed.</p> <p>The Selected items is working fine in .Net 1.1 but not in 3.5.I am giving sample code where I am facing the issue.The same code works fine in .Net1.1</p> <p>Below are the aspx lines </p> <pre><code>&lt;%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ListBox.aspx.cs" Inherits="WebApplication1.ListBox" %&gt; &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml" &gt; &lt;head&gt; &lt;title&gt;UsageReport&lt;/title&gt; &lt;script language="javascript"&gt; function isAllChecked() { var ctrlList = document.getElementById("lstUsers"); var allChecked = document.getElementById("chkAll"); var checked = allChecked.checked; if (checked) { ctrlList.disabled = true; unselectItems(); } else { ctrlList.disabled = false; } } function unselectItems() { var lstUsers = document.getElementById("lstUsers"); var list = lstUsers; for (var i = 0; i &lt; list.length; i ++) { list[i].selected = false; } list.selectedIndex = -1; } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;div&gt; &lt;/div&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt; &amp;nbsp;&lt;/td&gt; &lt;td&gt; &lt;asp:CheckBox ID="chkAll" Checked="True" runat="server" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt; &amp;nbsp;&lt;/td&gt; &lt;td&gt; &lt;asp:ListBox ID="lstUsers" runat="server" SelectionMode="Multiple" Enabled="false"&gt;&lt;/asp:ListBox&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt; &amp;nbsp;&lt;/td&gt; &lt;td&gt; &lt;asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Below are the lines for CodeBehind</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication1 { public partial class ListBox : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { this.chkAll.Attributes["onclick"] = "isAllChecked();"; lstUsers.DataSource = new string[] { "one", "two", "three" }; lstUsers.DataBind(); } } protected void Button1_Click(object sender, EventArgs e) { foreach (ListItem li in lstUsers.Items) { if(li.Selected) Response.Write(li.Value); } } } } </code></pre>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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