CS/WebSite/Default.aspx

﻿<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register assembly="DevExpress.Web.v13.1, Version=13.1.14.0, Culture=neutral, 
    PublicKeyToken=b88d1754d700e49a" namespace="DevExpress.Web" tagprefix="dxe" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <dxe:ASPxLabel ID="ASPxLabel1" runat="server" Text="First Name">
        </dxe:ASPxLabel>
        <dxe:ASPxTextBox ID="ASPxTextBox1" runat="server" ClientInstanceName="firstName" 
            Width="170px">
        </dxe:ASPxTextBox>
        <br />
        <dxe:ASPxLabel ID="ASPxLabel2" runat="server" Text="Last Name">
        </dxe:ASPxLabel>
        <dxe:ASPxTextBox ID="ASPxTextBox2" runat="server" ClientInstanceName="lastName" 
            Width="170px">
        </dxe:ASPxTextBox>
        <br />
        <dxe:ASPxButton ID="ASPxButton2" runat="server" 
            Text="Add " AutoPostBack="False">
            <ClientSideEvents Click="function(s, e) {
	            var fName=firstName.GetValue();
	            var lName=lastName.GetValue();
	            firstName.SetText('');
	            lastName.SetText(''); 
                var FullName = new Array(fName,lName);	
	            comboBox.AddItem(FullName);
            }" />
        </dxe:ASPxButton>
        <br />
        <dxe:ASPxComboBox ID="ASPxComboBox1" runat="server" 
            ClientInstanceName="comboBox" ValueType="System.String" Width="350px" 
            TextFormatString="{0} {1}">
            <Columns>
                <dxe:ListBoxColumn Caption="First Name" Name="First Name" 
                    ToolTip="First Name" />
                <dxe:ListBoxColumn Caption="Last Name" Name="Last Name" ToolTip="Last Name" />
            </Columns>
        </dxe:ASPxComboBox>
        <br />
        <dxe:ASPxButton ID="ASPxButton1" runat="server" Text="Clear Items" 
            AutoPostBack="False">
            <ClientSideEvents Click="function(s, e) {
	            comboBox.ClearItems();
            }" />
        </dxe:ASPxButton>
    
    </div>
    </form>
</body>
</html>