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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 123001 to 124000 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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