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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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