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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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