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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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