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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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