Disabling certain ListItems from a collection (VB) : ListItem « ASP.net Controls « ASP.NET Tutorial






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  2. ASP.net Controls
  3. ListItem
<%@ page language="VB" %>

<script runat="server">
    Protected Sub Dropdownlist1_SelectedIndexChanged(ByVal sender As Object, _
       ByVal e As System.EventArgs)
         Response.Write("You selected item number " & _
           DropDownList1.SelectedValue & "<br>")
         Response.Write("You didn't select item number " & _
           DropDownList1.Items(1).Value)
    End Sub
</script>

<html>
<head id="Head1" runat="server">
    <title>DropDownList Server Control</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:DropDownList ID="Dropdownlist1" Runat="server" AutoPostBack="True" 
         OnSelectedIndexChanged="Dropdownlist1_SelectedIndexChanged">
            <asp:ListItem Value="1">First Choice</asp:ListItem>
            <asp:ListItem Value="2" Enabled="False">Second Choice</asp:ListItem>
            <asp:ListItem Value="3">Third Choice</asp:ListItem>
        </asp:DropDownList>
    </form>
</body>
</html>








3.17.ListItem
3.17.1.A simple BulletedList control
3.17.2.Add asp:ListItem to asp:DropDownList
3.17.3.Declaring List Items
3.17.4.Using the LinkButton value for the DisplayMode attribute (C#)
3.17.5.Using the LinkButton value for the DisplayMode attribute (VB)
3.17.6.All items and selected item in a selectable control
3.17.7.Disabling certain ListItems from a collection (C#)
3.17.8.Disabling certain ListItems from a collection (VB)
3.17.9.Change style for ListItem
3.17.10.Set style for label