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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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