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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 182001 to 183000 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