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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 11001 to 12000 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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