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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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