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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page 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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