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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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