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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 118001 to 119000 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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