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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 225001 to 226000 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