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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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