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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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