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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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