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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 26001 to 27000 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