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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 70001 to 71000 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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