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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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