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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 288001 to 289000 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