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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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