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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 7001 to 8000 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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