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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 6001 to 7000 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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