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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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