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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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