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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 128001 to 129000 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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