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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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