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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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