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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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