asp:ListBox OnSelectedIndexChanged event and AutoPostBack (VB.net) : ListBox « ASP.net Controls « ASP.NET Tutorial

<%@ Page Language="VB" %>
<%@ Import Namespace="System.Drawing" %>

<script runat="server">
   sub NameHandler(Sender as Object, e as EventArgs)
      lblMessage.Text = tbName.Text & ", select a color: "
   end sub   

   sub ListHandler(Sender as Object, e as EventArgs)
      lbColor.BackColor = Color.FromName(Sender.SelectedItem.Text)
   end sub
</script>

<html><body>
   <form runat="server">
      <asp:Textbox id="tbName" runat="server"
         OnTextChanged="NameHandler"
         AutoPostBack="true" />
      
      <asp:Label id="lblMessage" runat="server"
         Text="Select a color: " />
      <asp:Listbox id="lbColor" runat="server"
         OnSelectedIndexChanged="ListHandler"
         AutoPostBack="true" >
         <asp:Listitem>Red</asp:Listitem>
         <asp:Listitem>blue</asp:Listitem>
         <asp:Listitem>green</asp:Listitem>
         <asp:Listitem>white</asp:Listitem>
      </asp:Listbox>
   </form>
</body></html>

3.16.ListBox
	3.16.1.	asp:ListBox OnSelectedIndexChanged event and AutoPostBack (VB.net)
	3.16.2.	Fill value to asp:ListBox in asp:RadioButtonList selection changed action (VB.net)
	3.16.3.	Bind array data to asp:ListBox (VB.net)
	3.16.4.	Bind asp:Label with asp:ListBox (VB.net)
	3.16.5.	Set array value to asp:ListBox DataSource (VB.net)
	3.16.6.	Selection mode of asp:ListBox (C#)
	3.16.7.	Selection mode of asp:ListBox (VB)
	3.16.8.	Using the ListBox control (C#)
	3.16.9.	Using the ListBox control (VB)
	3.16.10.	Property tester