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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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