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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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