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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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