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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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