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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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