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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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