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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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