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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 114001 to 115000 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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