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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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