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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 57001 to 58000 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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