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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 13001 to 14000 of 300000 Page: of 300 GoPage 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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