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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 85001 to 86000 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