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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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