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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 5001 to 6000 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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