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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 72001 to 73000 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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