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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 28001 to 29000 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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