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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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