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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 81001 to 82000 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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