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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 80001 to 81000 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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