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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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