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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 122001 to 123000 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