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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 51001 to 52000 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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