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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 26001 to 27000 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