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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 51001 to 52000 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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