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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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