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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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