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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 271001 to 272000 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