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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 GoPage 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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