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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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