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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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