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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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