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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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