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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 142001 to 143000 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