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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 54001 to 55000 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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