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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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