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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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