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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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