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Persisting DropDownList Settings

Amelie

In this example you can see how to preserve the Selected Items of the DropDownList control using the Telerik ASP.NET Persistence Framework.

  • DefaultCS.aspx
  • DefaultCS.aspx.cs
  • styles.css
<%@ Page Title="" Language="C#"  AutoEventWireup="true" CodeFile="DefaultCS.aspx.cs" Inherits="DefaultCS" %>

<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link rel="stylesheet" type="text/css" href="styles.css" />
</head>

<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />

    <telerik:RadPersistenceManager runat="server" ID="RadPersistenceManager1">
        <PersistenceSettings>
            <telerik:PersistenceSetting ControlID="RadDropDownList1" />
        </PersistenceSettings>
    </telerik:RadPersistenceManager>

    <div class="demo-container size-narrow">
        <div class="demo-settings">
            <telerik:RadButton RenderMode="Lightweight" ID="SaveButton" runat="server"  Text="Save state" OnClick="SaveButton_Click" />
            <telerik:RadButton RenderMode="Lightweight" ID="ResetButton" runat="server"  Text="Reset state" OnClick="ResetButton_Click" />
            <telerik:RadButton RenderMode="Lightweight" ID="LoadButton" runat="server"  Text="Load state" OnClick="LoadButton_Click" />
        </div>
        <telerik:RadDropDownList RenderMode="Lightweight" ID="RadDropDownList1" runat="server"  Width="500px">
            <Items>
                <telerik:DropDownListItem Text="Amelie" />
                <telerik:DropDownListItem Text="East Is East" />
                <telerik:DropDownListItem Text="Malena" />
                <telerik:DropDownListItem Text="Mulholland Drive" />
                <telerik:DropDownListItem Text="O Brother, Where Art Thou?" />
                <telerik:DropDownListItem Text="RockNRolla" />
                <telerik:DropDownListItem Text="Tales Of The City" />
                <telerik:DropDownListItem Text="Trainspotting" />
                <telerik:DropDownListItem Text="Vera Drake" />
            </Items>
        </telerik:RadDropDownList>
    </div>

    </form>
</body>
</html>

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