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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 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