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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 92001 to 93000 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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