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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 79001 to 80000 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