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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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