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

Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 187001 to 188000 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