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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 7001 to 8000 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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