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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 275001 to 276000 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