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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 67001 to 68000 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