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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 113001 to 114000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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