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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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