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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 103001 to 104000 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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