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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...151 152 153 154 155 156 157 158 159 160 ... Item 155001 to 156000 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="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ 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