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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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