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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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