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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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