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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 279001 to 280000 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