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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 284001 to 285000 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