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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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