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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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