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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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