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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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