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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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