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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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