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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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