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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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