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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 37001 to 38000 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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