<%@ Page Language="c#" AutoEventWireup="true" %>
<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
<title>Telerik ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
<telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
<div class="demo-container size-thin" runat="server">
<h4>Search for Customer names</h4>
<telerik:RadMultiSelect runat="server" Width="300px" ID="RadMultiSelect1"
DataTextField="ContactName"
DataValueField="CustomerID"
DropDownHeight="400"
Placeholder="Select customers...">
<WebServiceClientDataSource >
<WebServiceSettings ServiceType="OData">
<Select Url="https://demos.telerik.com/kendo-ui/service/Northwind.svc/Customers" />
</WebServiceSettings>
<GroupExpressions>
<telerik:ClientDataSourceGroupExpression FieldName="Country" />
</GroupExpressions>
</WebServiceClientDataSource>
</telerik:RadMultiSelect>
</div>
</form>
</body>
</html>