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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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