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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 2001 to 3000 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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