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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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