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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 263001 to 264000 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