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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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