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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 18001 to 19000 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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