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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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