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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 267001 to 268000 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