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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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