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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 16001 to 17000 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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