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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 215001 to 216000 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