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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 112001 to 113000 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