New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
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="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ 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>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance