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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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