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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 20001 to 21000 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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