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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 41001 to 42000 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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