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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 48001 to 49000 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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