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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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