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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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