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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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