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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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