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


...91 92 93 94 95 96 97 98 99 100 ... Item 94001 to 95000 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