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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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