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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 76001 to 77000 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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