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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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