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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 78001 to 79000 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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