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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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