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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 91001 to 92000 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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