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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 44001 to 45000 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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