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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 78001 to 79000 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