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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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