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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 148001 to 149000 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