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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 103001 to 104000 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