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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 167001 to 168000 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