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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 22001 to 23000 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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