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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 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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