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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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