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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Antonio Moreno	Argentina	1 2 3 4 5
2	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
3	Owner	Antonio Moreno	Argentina	1 2 3 4 5
4	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
5	Accountant	Jaime Yorres	Brazil	1 2 3 4 5
6	Marketing Assistant	Antonio Moreno	Brazil	1 2 3 4 5
7	Sales Associate	Georg Pipps	Italy	1 2 3 4 5
8	Owner	Howard Snyder	Germany	1 2 3 4 5
9	Sales Manager	Matti Karttunen	Austria	1 2 3 4 5
10	Sales Consultant	Hanna Moos	Spain	1 2 3 4 5
11	Sales Representative	Howard Snyder	France	1 2 3 4 5
12	Sales Consultant	Patricio Simpson	Argentina	1 2 3 4 5
13	Sales Consultant	Elizabeth Lincoln	France	1 2 3 4 5
14	Sales Consultant	Matti Karttunen	Spain	1 2 3 4 5
15	Sales Associate	Hanna Moos	USA	1 2 3 4 5
16	Sales Associate	Patricio Simpson	Argentina	1 2 3 4 5
17	Accountant	Hanna Moos	Italy	1 2 3 4 5
18	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
19	Sales Consultant	Hanna Moos	Austria	1 2 3 4 5
20	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
21	Accounting Manager	Elizabeth Lincoln	England	1 2 3 4 5
22	Sales Associate	Pascale Cartrain	Italy	1 2 3 4 5
23	Sales Consultant	Pascale Cartrain	Italy	1 2 3 4 5
24	Sales Associate	Hanna Moos	Austria	1 2 3 4 5
25	Sales Consultant	Pascale Cartrain	USA	1 2 3 4 5
26	Marketing Manager	Pascale Cartrain	Bulgaria	1 2 3 4 5
27	Marketing Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
28	Sales Consultant	Jaime Yorres	Bulgaria	1 2 3 4 5
29	Accounting Manager	Matti Karttunen	France	1 2 3 4 5
30	Marketing Manager	Elizabeth Lincoln	USA	1 2 3 4 5
31	Accounting Manager	Patricio Simpson	Germany	1 2 3 4 5
32	Accountant	Howard Snyder	France	1 2 3 4 5
33	Sales Consultant	Howard Snyder	Brazil	1 2 3 4 5
34	Marketing Assistant	Howard Snyder	Argentina	1 2 3 4 5
35	Sales Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
36	Accountant	Antonio Moreno	USA	1 2 3 4 5
37	Sales Associate	Pascale Cartrain	Italy	1 2 3 4 5
38	Sales Agent	Paul Henriot	England	1 2 3 4 5
39	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
40	Sales Associate	Howard Snyder	England	1 2 3 4 5
41	Marketing Assistant	Antonio Moreno	Argentina	1 2 3 4 5
42	Marketing Assistant	Matti Karttunen	USA	1 2 3 4 5
43	Accountant	Hanna Moos	Italy	1 2 3 4 5
44	Accountant	Georg Pipps	England	1 2 3 4 5
45	Marketing Assistant	Paul Henriot	USA	1 2 3 4 5
46	Sales Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
47	Accountant	Pascale Cartrain	France	1 2 3 4 5
48	Marketing Manager	Georg Pipps	USA	1 2 3 4 5
49	Sales Associate	Matti Karttunen	Germany	1 2 3 4 5
50	Sales Agent	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
51	Marketing Manager	Patricio Simpson	Austria	1 2 3 4 5
52	Sales Agent	Georg Pipps	France	1 2 3 4 5
53	Sales Agent	Elizabeth Lincoln	Austria	1 2 3 4 5
54	Sales Associate	Jaime Yorres	Brazil	1 2 3 4 5
55	Sales Representative	Patricio Simpson	USA	1 2 3 4 5
56	Marketing Assistant	Georg Pipps	Argentina	1 2 3 4 5
57	Sales Representative	Patricio Simpson	Austria	1 2 3 4 5
58	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
59	Accountant	Elizabeth Lincoln	Spain	1 2 3 4 5
60	Owner	Antonio Moreno	Austria	1 2 3 4 5
61	Marketing Assistant	Pascale Cartrain	Brazil	1 2 3 4 5
62	Marketing Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
63	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
64	Sales Consultant	Patricio Simpson	Argentina	1 2 3 4 5
65	Owner	Howard Snyder	France	1 2 3 4 5
66	Sales Associate	Antonio Moreno	Italy	1 2 3 4 5
67	Sales Associate	Georg Pipps	Argentina	1 2 3 4 5
68	Owner	Hanna Moos	England	1 2 3 4 5
69	Sales Consultant	Howard Snyder	England	1 2 3 4 5
70	Sales Manager	Antonio Moreno	USA	1 2 3 4 5
71	Sales Manager	Patricio Simpson	France	1 2 3 4 5
72	Sales Representative	Patricio Simpson	Argentina	1 2 3 4 5
73	Sales Consultant	Antonio Moreno	France	1 2 3 4 5
74	Marketing Assistant	Hanna Moos	USA	1 2 3 4 5
75	Accountant	Hanna Moos	France	1 2 3 4 5
76	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
77	Accountant	Antonio Moreno	Argentina	1 2 3 4 5
78	Sales Representative	Jaime Yorres	Germany	1 2 3 4 5
79	Owner	Georg Pipps	Italy	1 2 3 4 5
80	Sales Representative	Matti Karttunen	England	1 2 3 4 5
81	Sales Manager	Patricio Simpson	Spain	1 2 3 4 5
82	Sales Associate	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
83	Sales Consultant	Howard Snyder	Italy	1 2 3 4 5
84	Sales Agent	Paul Henriot	England	1 2 3 4 5
85	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
86	Sales Associate	Hanna Moos	England	1 2 3 4 5
87	Sales Agent	Paul Henriot	Austria	1 2 3 4 5
88	Sales Agent	Georg Pipps	England	1 2 3 4 5
89	Marketing Manager	Antonio Moreno	Austria	1 2 3 4 5
90	Owner	Howard Snyder	Austria	1 2 3 4 5
91	Sales Associate	Georg Pipps	England	1 2 3 4 5
92	Sales Associate	Paul Henriot	England	1 2 3 4 5
93	Owner	Elizabeth Lincoln	France	1 2 3 4 5
94	Sales Representative	Pascale Cartrain	Austria	1 2 3 4 5
95	Owner	Patricio Simpson	France	1 2 3 4 5
96	Sales Associate	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
97	Sales Agent	Paul Henriot	USA	1 2 3 4 5
98	Sales Agent	Antonio Moreno	USA	1 2 3 4 5
99	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
100	Marketing Assistant	Hanna Moos	Argentina	1 2 3 4 5


...261 262 263 264 265 266 267 268 269 270 ... Item 262001 to 263000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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