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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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