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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...81 82 83 84 85 86 87 88 89 90 ... Item 87001 to 88000 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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