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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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