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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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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>

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