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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 194001 to 195000 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