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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 75001 to 76000 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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