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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 32001 to 33000 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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