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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 72001 to 73000 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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