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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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