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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 76001 to 77000 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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