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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 77001 to 78000 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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