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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 132001 to 133000 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