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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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