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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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