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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...101 102 103 104 105 106 107 108 109 110 ... Item 102001 to 103000 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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