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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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