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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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