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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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