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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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