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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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