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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 21001 to 22000 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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