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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...11 12 13 14 15 16 17 18 19 20 ... Item 15001 to 16000 of 300000 Page: of 300 GoPage 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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