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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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