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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 147001 to 148000 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