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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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