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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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