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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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