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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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