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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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