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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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