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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 86001 to 87000 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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