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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 41001 to 42000 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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