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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 of 300000 Page: of 300 GoPage 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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