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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 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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