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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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