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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 89001 to 90000 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