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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 89001 to 90000 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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