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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 124001 to 125000 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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