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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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