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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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