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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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