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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 211001 to 212000 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