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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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