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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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