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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 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