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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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