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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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