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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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