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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 60001 to 61000 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