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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...41 42 43 44 45 46 47 48 49 50 ... Item 42001 to 43000 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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