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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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