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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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