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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 265001 to 266000 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