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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 23001 to 24000 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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