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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 3001 to 4000 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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