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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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