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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 45001 to 46000 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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