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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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