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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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