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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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