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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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