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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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