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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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