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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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