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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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