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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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