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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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