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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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