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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 82001 to 83000 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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