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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 30001 to 31000 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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