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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 30001 to 31000 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