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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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