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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 74001 to 75000 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