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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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