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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 29001 to 30000 of 300000 Page: of 300 GoPage 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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