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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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