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Client-side Events

Event log

RadMultiColumnComboBox exposes the following client-side events:

  • OnInitialize—Fired just before the RadMultiColumnComboBox client-side object is initialized.
  • OnLoad—Fired when RadMultiColumnComboBox is initialized.
  • OnSelect—Fired when an item from the popup is selected by the user either with mouse/tap or with keyboard navigation. Cancellable.
  • OnOpen—Fired when the popup of the widget is opened by the user. Cancellable.
  • OnFiltering—Fired when the widget is about to filter the data source. Cancellable.
  • OnDataBound—Fired when the widget is bound to data from its data source.
  • OnClose—Fired when the popup of the widget is closed. Cancellable.
  • OnCascade—Fired when the value of the widget is changed via API or user interaction. Cancellable.
  • OnChange—Fired when the value of the widget is changed by the user.
  • DefaultCS.aspx
  • scripts.js
<%@ Page Language="c#" AutoEventWireup="true"  %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <script src="scripts.js" type="text/javascript"></script>
</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" style="text-align: center">
        <telerik:RadMultiColumnComboBox runat="server" ID="RadMultiColumnComboBox1" Filter="Contains"
            DataTextField="ContactName" DataValueField="CustomerID"
            Height="400" Width="100%" Placeholder="select from the dropdown or type">
            <ClientEvents
                OnInitialize="telerikDemo.OnInitialize"
                OnLoad="telerikDemo.OnLoad"
                OnCascade="telerikDemo.OnCascade"
                OnChange="telerikDemo.OnChange"
                OnClose="telerikDemo.OnClose"
                OnDataBound="telerikDemo.OnDataBound"
                OnFiltering="telerikDemo.OnFiltering"
                OnOpen="telerikDemo.OnOpen"
                OnSelect="telerikDemo.OnSelect" />
            <ColumnsCollection>
                <telerik:MultiColumnComboBoxColumn Field="CustomerID" Title="ID" />
                <telerik:MultiColumnComboBoxColumn Field="ContactName" Title="Name" />
            </ColumnsCollection>
            <WebServiceSettings Select-ContentType="JSON" ServiceType="OData"
                Select-Url="https://demos.telerik.com/kendo-ui/service/Northwind.svc/Customers">
            </WebServiceSettings>
        </telerik:RadMultiColumnComboBox>
    </div>
    <qsf:EventLogConsole ID="EventLogConsole" runat="server" AllowClear="true"></qsf:EventLogConsole>
    </form>
</body>
</html>

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