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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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