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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 83001 to 84000 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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