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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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