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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 19001 to 20000 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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