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


...241 242 243 244 245 246 247 248 249 250 ... Item 243001 to 244000 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