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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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