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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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