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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 4001 to 5000 of 300000 Page: of 300 GoPage 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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