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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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