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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 GoPage 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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