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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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