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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 71001 to 72000 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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