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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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