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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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