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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 40001 to 41000 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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