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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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