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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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