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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 35001 to 36000 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