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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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