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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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