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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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