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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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