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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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