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<%@ Page Language="VB" %>
<script runat="server">
Protected Sub Button1_Click(ByVal sender As Object, _
ByVal e As System.EventArgs)
ListBox1.Items.Add(TextBox1.Text.ToString())
End Sub
Protected Sub Button2_Click(ByVal sender As Object, _
ByVal e As System.EventArgs)
Label1.Text = "You selected from the ListBox:<br>"
For Each li As ListItem In ListBox1.Items
If li.Selected = True Then
label1.Text += li.Text & "<br>"
End If
Next
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Using the ListBox</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox>
<asp:Button ID="Button1" Runat="server" Text="Add an additional item"
OnClick="Button1_Click" />
<br />
<br />
<asp:ListBox ID="ListBox1" Runat="server" SelectionMode="multiple">
<asp:ListItem>Hematite</asp:ListItem>
<asp:ListItem>Halite</asp:ListItem>
<asp:ListItem>Limonite</asp:ListItem>
<asp:ListItem>Magnetite</asp:ListItem>
</asp:ListBox>
<br />
<br />
<asp:Button ID="Button2" Runat="server" Text="Submit"
OnClick="Button2_Click" />
<br />
<br />
<asp:Label ID="Label1" Runat="server"></asp:Label>
</div>
</form>
</body>
</html>
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