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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 241001 to 242000 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