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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 280001 to 281000 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