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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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