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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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