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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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