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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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