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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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