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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 of 300000 Page: of 300 GoPage 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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