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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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