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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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