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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 47001 to 48000 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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