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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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