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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 109001 to 110000 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