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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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