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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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