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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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