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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 102001 to 103000 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