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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 61001 to 62000 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