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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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