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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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