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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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