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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 56001 to 57000 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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