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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 136001 to 137000 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